2136885257 has 16 divisors (see below), whose sum is σ = 2330875008. Its totient is φ = 1947267840.

The previous prime is 2136885251. The next prime is 2136885259. The reversal of 2136885257 is 7525886312.

It is a cyclic number.

It is not a de Polignac number, because 2136885257 - 2¹² = 2136881161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2136885251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 383582 + ... + 389112.

It is an arithmetic number, because the mean of its divisors is an integer number (145679688).

Almost surely, 2^2136885257 is an apocalyptic number.

It is an amenable number.

2136885257 is a deficient number, since it is larger than the sum of its proper divisors (193989751).

2136885257 is a wasteful number, since it uses less digits than its factorization.

2136885257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5920.

The product of its digits is 806400, while the sum is 47.

The square root of 2136885257 is about 46226.4562453148. The cubic root of 2136885257 is about 1288.0332301217.

The spelling of 2136885257 in words is "two billion, one hundred thirty-six million, eight hundred eighty-five thousand, two hundred fifty-seven".