3256157638 has 16 divisors (see below), whose sum is σ = 4936800960. Its totient is φ = 1610639296.

The previous prime is 3256157621. The next prime is 3256157669. The reversal of 3256157638 is 8367516523.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60003 + ... + 100561.

It is an arithmetic number, because the mean of its divisors is an integer number (308550060).

Almost surely, 2^3256157638 is an apocalyptic number.

3256157638 is a deficient number, since it is larger than the sum of its proper divisors (1680643322).

3256157638 is a wasteful number, since it uses less digits than its factorization.

3256157638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40991.

The product of its digits is 907200, while the sum is 46.

The square root of 3256157638 is about 57062.7517562902. The cubic root of 3256157638 is about 1482.1829300861.

The spelling of 3256157638 in words is "three billion, two hundred fifty-six million, one hundred fifty-seven thousand, six hundred thirty-eight".