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7412136881 = 19937246919
BaseRepresentation
bin1101110011100110…
…00011101110110001
3201010120020120022012
412321303003232301
5110140001340011
63223255452305
7351452060342
oct67163035661
921116216265
107412136881
113163a5a166
12152a387095
13911806916
145045a00c9
152d5ac8a8b
hex1b9cc3bb1

7412136881 has 4 divisors (see below), whose sum is σ = 7449384000. Its totient is φ = 7374889764.

The previous prime is 7412136841. The next prime is 7412136899. The reversal of 7412136881 is 1886312147.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1886312147 = 4740134301.

It is a cyclic number.

It is not a de Polignac number, because 7412136881 - 26 = 7412136817 is a prime.

It is a super-2 number, since 2×74121368812 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7412136811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18623261 + ... + 18623658.

It is an arithmetic number, because the mean of its divisors is an integer number (1862346000).

Almost surely, 27412136881 is an apocalyptic number.

It is an amenable number.

7412136881 is a deficient number, since it is larger than the sum of its proper divisors (37247119).

7412136881 is a wasteful number, since it uses less digits than its factorization.

7412136881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37247118.

The product of its digits is 64512, while the sum is 41.

The square root of 7412136881 is about 86093.7679568039. The cubic root of 7412136881 is about 1949.7599424845.

The spelling of 7412136881 in words is "seven billion, four hundred twelve million, one hundred thirty-six thousand, eight hundred eighty-one".

Divisors: 1 199 37246919 7412136881