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1129146481 = 2376147521
BaseRepresentation
bin100001101001101…
…0110100001110001
32220200200120210001
41003103112201301
54303030141411
6304013310001
736660405151
oct10323264161
92820616701
101129146481
1152a412511
12276195301
1314cc17318
14a9d68761
15691e1dc1
hex434d6871

1129146481 has 4 divisors (see below), whose sum is σ = 1129217764. Its totient is φ = 1129075200.

The previous prime is 1129146467. The next prime is 1129146493. The reversal of 1129146481 is 1846419211.

1129146481 is a nontrivial binomial coefficient, being equal to C(47522, 2).

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 839840400 + 289306081 = 28980^2 + 17009^2 .

It is a 3-Lehmer number, since φ(1129146481) divides (1129146481-1)3.

It is a cyclic number.

It is not a de Polignac number, because 1129146481 - 217 = 1129015409 is a prime.

It is a super-2 number, since 2×11291464812 = 2549943551109366722, which contains 22 as substring.

It is a deceptive number, since it divides R1129146480.

It is a self number, because there is not a number n which added to its sum of digits gives 1129146481.

It is not an unprimeable number, because it can be changed into a prime (1129146401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1 + ... + 47521.

It is an arithmetic number, because the mean of its divisors is an integer number (282304441).

It is a Poulet number, since it divides 21129146480-1.

Almost surely, 21129146481 is an apocalyptic number.

1129146481 is the 47521-st triangular number and also the 23761-st hexagonal number.

1129146481 is the 15841-st centered nonagonal number.

It is an amenable number.

1129146481 is a deficient number, since it is larger than the sum of its proper divisors (71283).

1129146481 is an equidigital number, since it uses as much as digits as its factorization.

1129146481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71282.

The product of its digits is 13824, while the sum is 37.

The square root of 1129146481 is about 33602.7749002966. The cubic root of 1129146481 is about 1041.3181267998.

The spelling of 1129146481 in words is "one billion, one hundred twenty-nine million, one hundred forty-six thousand, four hundred eighty-one".

Divisors: 1 23761 47521 1129146481