1630931632 has 40 divisors (see below), whose sum is σ = 3466309392. Its totient is φ = 737222400.

The previous prime is 1630931611. The next prime is 1630931647. The reversal of 1630931632 is 2361390361.

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, 6258 + ... + 57454.

Almost surely, 2^1630931632 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 1630931632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1733154696).

1630931632 is an abundant number, since it is smaller than the sum of its proper divisors (1835377760).

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

1630931632 is a wasteful number, since it uses less digits than its factorization.

1630931632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51397 (or 51391 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 1630931632 is about 40384.7945642911. The cubic root of 1630931632 is about 1177.0960942355.

Subtracting 1630931632 from its reverse (2361390361), we obtain a square (730458729 = 27027²).

The spelling of 1630931632 in words is "one billion, six hundred thirty million, nine hundred thirty-one thousand, six hundred thirty-two".