2151632973 has 24 divisors (see below), whose sum is σ = 3418632000. Its totient is φ = 1199513280.

The previous prime is 2151632971. The next prime is 2151632981. The reversal of 2151632973 is 3792361512.

It is a happy number.

It is not a de Polignac number, because 2151632973 - 2¹ = 2151632971 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151632971) 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 23 ways as a sum of consecutive naturals, for example, 172473 + ... + 184526.

It is an arithmetic number, because the mean of its divisors is an integer number (142443000).

Almost surely, 2^2151632973 is an apocalyptic number.

It is an amenable number.

2151632973 is a deficient number, since it is larger than the sum of its proper divisors (1266999027).

2151632973 is a wasteful number, since it uses less digits than its factorization.

2151632973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357057 (or 357050 counting only the distinct ones).

The product of its digits is 68040, while the sum is 39.

The square root of 2151632973 is about 46385.6979358940. The cubic root of 2151632973 is about 1290.9895604054.

The spelling of 2151632973 in words is "two billion, one hundred fifty-one million, six hundred thirty-two thousand, nine hundred seventy-three".