2151210637 has 2 divisors, whose sum is σ = 2151210638. Its totient is φ = 2151210636.

The previous prime is 2151210629. The next prime is 2151210643. The reversal of 2151210637 is 7360121512.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1734805801 + 416404836 = 41651^2 + 20406^2 .

It is a cyclic number.

It is not a de Polignac number, because 2151210637 - 2³ = 2151210629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2151210037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1075605318 + 1075605319.

It is an arithmetic number, because the mean of its divisors is an integer number (1075605319).

Almost surely, 2^2151210637 is an apocalyptic number.

It is an amenable number.

2151210637 is a deficient number, since it is larger than the sum of its proper divisors (1).

2151210637 is an equidigital number, since it uses as much as digits as its factorization.

2151210637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 2151210637 is about 46381.1452747773. The cubic root of 2151210637 is about 1290.9050870385.

The spelling of 2151210637 in words is "two billion, one hundred fifty-one million, two hundred ten thousand, six hundred thirty-seven".