2151256108 has 6 divisors (see below), whose sum is σ = 3764698196. Its totient is φ = 1075628052.

The previous prime is 2151256099. The next prime is 2151256117. The reversal of 2151256108 is 8016521512.

It is an interprime number because it is at equal distance from previous prime (2151256099) and next prime (2151256117).

It is a self number, because there is not a number n which added to its sum of digits gives 2151256108.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 268907010 + ... + 268907017.

Almost surely, 2^2151256108 is an apocalyptic number.

It is an amenable number.

2151256108 is a deficient number, since it is larger than the sum of its proper divisors (1613442088).

2151256108 is a wasteful number, since it uses less digits than its factorization.

2151256108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 537814031 (or 537814029 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 31.

The square root of 2151256108 is about 46381.6354606001. The cubic root of 2151256108 is about 1290.9141824335.

The spelling of 2151256108 in words is "two billion, one hundred fifty-one million, two hundred fifty-six thousand, one hundred eight".