18523573870 has 16 divisors (see below), whose sum is σ = 33364882368. Its totient is φ = 7404440800.

The previous prime is 18523573853. The next prime is 18523573877. The reversal of 18523573870 is 7837532581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18523573877) 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, 607981 + ... + 637720.

It is an arithmetic number, because the mean of its divisors is an integer number (2085305148).

Almost surely, 2^18523573870 is an apocalyptic number.

18523573870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18523573870 is a deficient number, since it is larger than the sum of its proper divisors (14841308498).

18523573870 is a wasteful number, since it uses less digits than its factorization.

18523573870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247195.

The product of its (nonzero) digits is 1411200, while the sum is 49.

The spelling of 18523573870 in words is "eighteen billion, five hundred twenty-three million, five hundred seventy-three thousand, eight hundred seventy".