634549830 has 16 divisors (see below), whose sum is σ = 1522919664. Its totient is φ = 169213280.

The previous prime is 634549789. The next prime is 634549843. The reversal of 634549830 is 38945436.

634549830 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between even and odd.

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, 10575801 + ... + 10575860.

It is an arithmetic number, because the mean of its divisors is an integer number (95182479).

Almost surely, 2^634549830 is an apocalyptic number.

634549830 is an abundant number, since it is smaller than the sum of its proper divisors (888369834).

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

634549830 is a wasteful number, since it uses less digits than its factorization.

634549830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21151671.

The product of its (nonzero) digits is 311040, while the sum is 42.

The square root of 634549830 is about 25190.2725273070. The cubic root of 634549830 is about 859.3206415953.

The spelling of 634549830 in words is "six hundred thirty-four million, five hundred forty-nine thousand, eight hundred thirty".