634429018 has 16 divisors (see below), whose sum is σ = 1008189504. Its totient is φ = 298386880.

The previous prime is 634429007. The next prime is 634429031. The reversal of 634429018 is 810924436.

634429018 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 72963 + ... + 81193.

It is an arithmetic number, because the mean of its divisors is an integer number (63011844).

Almost surely, 2^634429018 is an apocalyptic number.

634429018 is a deficient number, since it is larger than the sum of its proper divisors (373760486).

634429018 is a wasteful number, since it uses less digits than its factorization.

634429018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10517.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 634429018 is about 25187.8744240160. The cubic root of 634429018 is about 859.2661027555.

The spelling of 634429018 in words is "six hundred thirty-four million, four hundred twenty-nine thousand, eighteen".