18374634099 has 12 divisors (see below), whose sum is σ = 26542550112. Its totient is φ = 12249104400.

The previous prime is 18374634097. The next prime is 18374634119. The reversal of 18374634099 is 99043647381.

It is a happy number.

It is not a de Polignac number, because 18374634099 - 2¹ = 18374634097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18374634097) 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, 175414 + ... + 259844.

It is an arithmetic number, because the mean of its divisors is an integer number (2211879176).

Almost surely, 2^18374634099 is an apocalyptic number.

18374634099 is a deficient number, since it is larger than the sum of its proper divisors (8167916013).

18374634099 is a wasteful number, since it uses less digits than its factorization.

18374634099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108618 (or 108615 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 54.

The spelling of 18374634099 in words is "eighteen billion, three hundred seventy-four million, six hundred thirty-four thousand, ninety-nine".