1630558904 has 64 divisors (see below), whose sum is σ = 3364653600. Its totient is φ = 736252416.

The previous prime is 1630558903. The next prime is 1630558913. The reversal of 1630558904 is 4098550361.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1630558903) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 940022 + ... + 941754.

Almost surely, 2^1630558904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1630558904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1682326800).

1630558904 is an abundant number, since it is smaller than the sum of its proper divisors (1734094696).

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

1630558904 is a wasteful number, since it uses less digits than its factorization.

1630558904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1944 (or 1940 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 41.

The square root of 1630558904 is about 40380.1795934590. The cubic root of 1630558904 is about 1177.0064174538.

The spelling of 1630558904 in words is "one billion, six hundred thirty million, five hundred fifty-eight thousand, nine hundred four".