1630563864 has 32 divisors (see below), whose sum is σ = 4084741440. Its totient is φ = 542410400.

The previous prime is 1630563839. The next prime is 1630563923. The reversal of 1630563864 is 4683650361.

It is a super-2 number, since 2×1630563864² = 5317477029165220992, which contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

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, 57402 + ... + 80969.

It is an arithmetic number, because the mean of its divisors is an integer number (127648170).

Almost surely, 2^1630563864 is an apocalyptic number.

It is an amenable number.

1630563864 is an abundant number, since it is smaller than the sum of its proper divisors (2454177576).

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

1630563864 is a wasteful number, since it uses less digits than its factorization.

1630563864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138871 (or 138867 counting only the distinct ones).

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

The square root of 1630563864 is about 40380.2410096820. The cubic root of 1630563864 is about 1177.0076108986.

The spelling of 1630563864 in words is "one billion, six hundred thirty million, five hundred sixty-three thousand, eight hundred sixty-four".