3742839817956 has 18 divisors (see below), whose sum is σ = 9461067317702. Its totient is φ = 1247613272640.

The previous prime is 3742839817943. The next prime is 3742839817967. The reversal of 3742839817956 is 6597189382473.

3742839817956 is a `hidden beast` number, since 3 + 7 + 428 + 3 + 9 + 81 + 79 + 56 = 666.

It can be written as a sum of positive squares in only one way, i.e., 3442991580900 + 299848237056 = 1855530^2 + 547584^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 51983886325 + ... + 51983886396.

Almost surely, 2^{3742839817956} is an apocalyptic number.

3742839817956 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3742839817956 is an abundant number, since it is smaller than the sum of its proper divisors (5718227499746).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3742839817956 is a wasteful number, since it uses less digits than its factorization.

3742839817956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103967772731 (or 103967772726 counting only the distinct ones).

The product of its digits is 548674560, while the sum is 72.

The spelling of 3742839817956 in words is "three trillion, seven hundred forty-two billion, eight hundred thirty-nine million, eight hundred seventeen thousand, nine hundred fifty-six".