2163151972 has 6 divisors (see below), whose sum is σ = 3785515958. Its totient is φ = 1081575984.

The previous prime is 2163151943. The next prime is 2163151981. The reversal of 2163151972 is 2791513612.

It can be written as a sum of positive squares in only one way, i.e., 1325396836 + 837755136 = 36406^2 + 28944^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 270393993 + ... + 270394000.

Almost surely, 2^2163151972 is an apocalyptic number.

It is an amenable number.

2163151972 is a deficient number, since it is larger than the sum of its proper divisors (1622363986).

2163151972 is a wasteful number, since it uses less digits than its factorization.

2163151972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540787997 (or 540787995 counting only the distinct ones).

The product of its digits is 22680, while the sum is 37.

The square root of 2163151972 is about 46509.6976124335. The cubic root of 2163151972 is about 1293.2892785917.

The spelling of 2163151972 in words is "two billion, one hundred sixty-three million, one hundred fifty-one thousand, nine hundred seventy-two".