30942920836 has 27 divisors (see below), whose sum is σ = 54517678383. Its totient is φ = 15367148160.

The previous prime is 30942920831. The next prime is 30942920843. The reversal of 30942920836 is 63802924903.

The square root of 30942920836 is 175906.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 7795124100 + 23147796736 = 88290^2 + 152144^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30942920831) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 98859016 + ... + 98859328.

Almost surely, 2^30942920836 is an apocalyptic number.

30942920836 is the 175906-th square number.

It is an amenable number.

30942920836 is a deficient number, since it is larger than the sum of its proper divisors (23574757547).

30942920836 is an frugal number, since it uses more digits than its factorization.

30942920836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1192 (or 596 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 46.

The spelling of 30942920836 in words is "thirty billion, nine hundred forty-two million, nine hundred twenty thousand, eight hundred thirty-six".