3117778690 has 32 divisors (see below), whose sum is σ = 6252104880. Its totient is φ = 1111482624.

The previous prime is 3117778667. The next prime is 3117778709. The reversal of 3117778690 is 968777113.

It can be written as a sum of positive squares in 8 ways, for example, as 806957649 + 2310821041 = 28407^2 + 48071^2 .

It is a super-2 number, since 2×3117778690² = 19441087919636232200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 409729 + ... + 417268.

Almost surely, 2^3117778690 is an apocalyptic number.

3117778690 is an abundant number, since it is smaller than the sum of its proper divisors (3134326190).

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

3117778690 is a wasteful number, since it uses less digits than its factorization.

3117778690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827046.

The product of its (nonzero) digits is 444528, while the sum is 49.

The square root of 3117778690 is about 55837.0727205501. The cubic root of 3117778690 is about 1460.8818544960.

The spelling of 3117778690 in words is "three billion, one hundred seventeen million, seven hundred seventy-eight thousand, six hundred ninety".