3958078690 has 64 divisors (see below), whose sum is σ = 7371834624. Its totient is φ = 1529452288.

The previous prime is 3958078687. The next prime is 3958078697. The reversal of 3958078690 is 968708593.

It is a happy number.

It is a super-2 number, since 2×3958078690² = 31332773832464232200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3958078697) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17436357 + ... + 17436583.

It is an arithmetic number, because the mean of its divisors is an integer number (115184916).

Almost surely, 2^3958078690 is an apocalyptic number.

3958078690 is a deficient number, since it is larger than the sum of its proper divisors (3413755934).

3958078690 is a wasteful number, since it uses less digits than its factorization.

3958078690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651.

The product of its (nonzero) digits is 3265920, while the sum is 55.

The square root of 3958078690 is about 62913.2632280348. The cubic root of 3958078690 is about 1581.8360712124.

The spelling of 3958078690 in words is "three billion, nine hundred fifty-eight million, seventy-eight thousand, six hundred ninety".