639157310 has 16 divisors (see below), whose sum is σ = 1255072752. Its totient is φ = 232420800.

The previous prime is 639157307. The next prime is 639157357. The reversal of 639157310 is 13751936.

It is a super-2 number, since 2×639157310² = 817044133852872200, which contains 22 as substring.

It is a zygodrome in base 3.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2905151 + ... + 2905370.

It is an arithmetic number, because the mean of its divisors is an integer number (78442047).

Almost surely, 2^639157310 is an apocalyptic number.

639157310 is a deficient number, since it is larger than the sum of its proper divisors (615915442).

639157310 is a wasteful number, since it uses less digits than its factorization.

639157310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5810539.

The product of its (nonzero) digits is 17010, while the sum is 35.

The square root of 639157310 is about 25281.5606717623. The cubic root of 639157310 is about 861.3954764323.

The spelling of 639157310 in words is "six hundred thirty-nine million, one hundred fifty-seven thousand, three hundred ten".