634710018 has 16 divisors (see below), whose sum is σ = 1272590496. Its totient is φ = 211041600.

The previous prime is 634710017. The next prime is 634710031. The reversal of 634710018 is 810017436.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (634710017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129496 + ... + 134307.

It is an arithmetic number, because the mean of its divisors is an integer number (79536906).

Almost surely, 2^634710018 is an apocalyptic number.

634710018 is an abundant number, since it is smaller than the sum of its proper divisors (637880478).

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

634710018 is a wasteful number, since it uses less digits than its factorization.

634710018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264209.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 634710018 is about 25193.4518873456. The cubic root of 634710018 is about 859.3929454906.

The spelling of 634710018 in words is "six hundred thirty-four million, seven hundred ten thousand, eighteen".