18695274018 has 16 divisors (see below), whose sum is σ = 37393890240. Its totient is φ = 6231200976.

The previous prime is 18695274001. The next prime is 18695274019. The reversal of 18695274018 is 81047259681.

It is not an unprimeable number, because it can be changed into a prime (18695274019) 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, 63358 + ... + 203481.

It is an arithmetic number, because the mean of its divisors is an integer number (2337118140).

Almost surely, 2^18695274018 is an apocalyptic number.

18695274018 is an abundant number, since it is smaller than the sum of its proper divisors (18698616222).

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

18695274018 is a wasteful number, since it uses less digits than its factorization.

18695274018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278521.

The product of its (nonzero) digits is 967680, while the sum is 51.

The spelling of 18695274018 in words is "eighteen billion, six hundred ninety-five million, two hundred seventy-four thousand, eighteen".