18539094650 has 24 divisors (see below), whose sum is σ = 34486301664. Its totient is φ = 7414866800.

The previous prime is 18539094647. The next prime is 18539094659. The reversal of 18539094650 is 5649093581.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is not an unprimeable number, because it can be changed into a prime (18539094659) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 908459 + ... + 928641.

It is an arithmetic number, because the mean of its divisors is an integer number (1436929236).

Almost surely, 2^18539094650 is an apocalyptic number.

18539094650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18539094650 is a deficient number, since it is larger than the sum of its proper divisors (15947207014).

18539094650 is a wasteful number, since it uses less digits than its factorization.

18539094650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38566 (or 38561 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 50.

The spelling of 18539094650 in words is "eighteen billion, five hundred thirty-nine million, ninety-four thousand, six hundred fifty".