2137951257 has 8 divisors (see below), whose sum is σ = 3069878784. Its totient is φ = 1315662288.

The previous prime is 2137951243. The next prime is 2137951289. The reversal of 2137951257 is 7521597312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2137951257 - 2¹⁶ = 2137885721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2137951217) 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, 27409593 + ... + 27409670.

It is an arithmetic number, because the mean of its divisors is an integer number (383734848).

Almost surely, 2^2137951257 is an apocalyptic number.

It is an amenable number.

2137951257 is a deficient number, since it is larger than the sum of its proper divisors (931927527).

2137951257 is a wasteful number, since it uses less digits than its factorization.

2137951257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54819279.

The product of its digits is 132300, while the sum is 42.

The square root of 2137951257 is about 46237.9850015115. The cubic root of 2137951257 is about 1288.2473759468.

The spelling of 2137951257 in words is "two billion, one hundred thirty-seven million, nine hundred fifty-one thousand, two hundred fifty-seven".