2151632637 has 48 divisors (see below), whose sum is σ = 4078763520. Its totient is φ = 1058896800.

The previous prime is 2151632629. The next prime is 2151632653. The reversal of 2151632637 is 7362361512.

2151632637 is a `hidden beast` number, since 2 + 1 + 5 + 16 + 3 + 2 + 637 = 666.

It is not a de Polignac number, because 2151632637 - 2³ = 2151632629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151632617) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 68539 + ... + 94872.

It is an arithmetic number, because the mean of its divisors is an integer number (84974240).

Almost surely, 2^2151632637 is an apocalyptic number.

It is an amenable number.

2151632637 is a deficient number, since it is larger than the sum of its proper divisors (1927130883).

2151632637 is a wasteful number, since it uses less digits than its factorization.

2151632637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163454 (or 163451 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 2151632637 is about 46385.6943140878. The cubic root of 2151632637 is about 1290.9894932048.

The spelling of 2151632637 in words is "two billion, one hundred fifty-one million, six hundred thirty-two thousand, six hundred thirty-seven".