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1081828801 = 2497743313
BaseRepresentation
bin100000001111011…
…0110010111000001
32210101122121010101
41000132312113001
54203422010201
6255203202401
735544251554
oct10036662701
92711577111
101081828801
11505733a99
12262376401
1314318aab1
14a396c69b
1564e96d01
hex407b65c1

1081828801 has 4 divisors (see below), whose sum is σ = 1081897092. Its totient is φ = 1081760512.

The previous prime is 1081828771. The next prime is 1081828807. The reversal of 1081828801 is 1088281801.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1088281801 = 7913775719.

It can be written as a sum of positive squares in 2 ways, for example, as 577152576 + 504676225 = 24024^2 + 22465^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1081828801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1081828807) 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, 3321 + ... + 46633.

It is an arithmetic number, because the mean of its divisors is an integer number (270474273).

Almost surely, 21081828801 is an apocalyptic number.

It is an amenable number.

1081828801 is a deficient number, since it is larger than the sum of its proper divisors (68291).

1081828801 is an equidigital number, since it uses as much as digits as its factorization.

1081828801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68290.

The product of its (nonzero) digits is 8192, while the sum is 37.

The square root of 1081828801 is about 32891.1660024390. The cubic root of 1081828801 is about 1026.5643536070.

The spelling of 1081828801 in words is "one billion, eighty-one million, eight hundred twenty-eight thousand, eight hundred one".

Divisors: 1 24977 43313 1081828801