18136794234 has 32 divisors (see below), whose sum is σ = 39070047744. Its totient is φ = 5579668800.

The previous prime is 18136794227. The next prime is 18136794251. The reversal of 18136794234 is 43249763181.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 617527 + ... + 646229.

It is an arithmetic number, because the mean of its divisors is an integer number (1220938992).

Almost surely, 2^18136794234 is an apocalyptic number.

18136794234 is an abundant number, since it is smaller than the sum of its proper divisors (20933253510).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18136794234 is a wasteful number, since it uses less digits than its factorization.

18136794234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36822.

The product of its digits is 870912, while the sum is 48.

The spelling of 18136794234 in words is "eighteen billion, one hundred thirty-six million, seven hundred ninety-four thousand, two hundred thirty-four".