18570857201 has 12 divisors (see below), whose sum is σ = 20220405660. Its totient is φ = 17047592640.

The previous prime is 18570857177. The next prime is 18570857237. The reversal of 18570857201 is 10275807581.

It can be written as a sum of positive squares in 6 ways, for example, as 11582064400 + 6988792801 = 107620^2 + 83599^2 .

It is not a de Polignac number, because 18570857201 - 2²⁶ = 18503748337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18570856201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 272966 + ... + 334143.

It is an arithmetic number, because the mean of its divisors is an integer number (1685033805).

Almost surely, 2^18570857201 is an apocalyptic number.

It is an amenable number.

18570857201 is a deficient number, since it is larger than the sum of its proper divisors (1649548459).

18570857201 is a wasteful number, since it uses less digits than its factorization.

18570857201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607316 (or 607303 counting only the distinct ones).

The product of its (nonzero) digits is 156800, while the sum is 44.

The spelling of 18570857201 in words is "eighteen billion, five hundred seventy million, eight hundred fifty-seven thousand, two hundred one".