2151871192 has 32 divisors (see below), whose sum is σ = 4096688400. Its totient is φ = 1059520000.

The previous prime is 2151871181. The next prime is 2151871199. The reversal of 2151871192 is 2911781512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151871199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172692 + ... + 184732.

Almost surely, 2^2151871192 is an apocalyptic number.

It is an amenable number.

2151871192 is a deficient number, since it is larger than the sum of its proper divisors (1944817208).

2151871192 is a wasteful number, since it uses less digits than its factorization.

2151871192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12387 (or 12383 counting only the distinct ones).

The product of its digits is 10080, while the sum is 37.

The square root of 2151871192 is about 46388.2656713958. The cubic root of 2151871192 is about 1291.0372028080.

The spelling of 2151871192 in words is "two billion, one hundred fifty-one million, eight hundred seventy-one thousand, one hundred ninety-two".