2136847857 has 8 divisors (see below), whose sum is σ = 2849352576. Its totient is φ = 1424454192.

The previous prime is 2136847849. The next prime is 2136847877. The reversal of 2136847857 is 7587486312.

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

It is not a de Polignac number, because 2136847857 - 2³ = 2136847849 is a prime.

It is a super-2 number, since 2×2136847857² = 9132237527930984898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2136847847) 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, 42648 + ... + 78054.

It is an arithmetic number, because the mean of its divisors is an integer number (356169072).

Almost surely, 2^2136847857 is an apocalyptic number.

It is an amenable number.

2136847857 is a deficient number, since it is larger than the sum of its proper divisors (712504719).

2136847857 is a wasteful number, since it uses less digits than its factorization.

2136847857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55527.

The product of its digits is 2257920, while the sum is 51.

The square root of 2136847857 is about 46226.0517132926. The cubic root of 2136847857 is about 1288.0257156450.

The spelling of 2136847857 in words is "two billion, one hundred thirty-six million, eight hundred forty-seven thousand, eight hundred fifty-seven".