637963952 has 10 divisors (see below), whose sum is σ = 1236055188. Its totient is φ = 318981968.

The previous prime is 637963943. The next prime is 637963957. The reversal of 637963952 is 259369736.

It is a self number, because there is not a number n which added to its sum of digits gives 637963952.

It is not an unprimeable number, because it can be changed into a prime (637963957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19936358 + ... + 19936389.

Almost surely, 2^637963952 is an apocalyptic number.

It is an amenable number.

637963952 is a deficient number, since it is larger than the sum of its proper divisors (598091236).

637963952 is a wasteful number, since it uses less digits than its factorization.

637963952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39872755 (or 39872749 counting only the distinct ones).

The product of its digits is 1837080, while the sum is 50.

The square root of 637963952 is about 25257.9482935570. The cubic root of 637963952 is about 860.8590442748.

The spelling of 637963952 in words is "six hundred thirty-seven million, nine hundred sixty-three thousand, nine hundred fifty-two".