18037688108 has 48 divisors (see below), whose sum is σ = 35404936224. Its totient is φ = 7968637440.

The previous prime is 18037688101. The next prime is 18037688159. The reversal of 18037688108 is 80188673081.

It is not an unprimeable number, because it can be changed into a prime (18037688101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1617560 + ... + 1628672.

It is an arithmetic number, because the mean of its divisors is an integer number (737602838).

Almost surely, 2^18037688108 is an apocalyptic number.

It is an amenable number.

18037688108 is a deficient number, since it is larger than the sum of its proper divisors (17367248116).

18037688108 is a wasteful number, since it uses less digits than its factorization.

18037688108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12162 (or 12160 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 50.

The spelling of 18037688108 in words is "eighteen billion, thirty-seven million, six hundred eighty-eight thousand, one hundred eight".