18742270518 has 48 divisors (see below), whose sum is σ = 41454167040. Its totient is φ = 6118091952.

The previous prime is 18742270447. The next prime is 18742270571. The reversal of 18742270518 is 81507224781.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 245755 + ... + 312857.

It is an arithmetic number, because the mean of its divisors is an integer number (863628480).

Almost surely, 2^18742270518 is an apocalyptic number.

18742270518 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

18742270518 is an abundant number, since it is smaller than the sum of its proper divisors (22711896522).

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

18742270518 is a wasteful number, since it uses less digits than its factorization.

18742270518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67433 (or 67430 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 45.

The spelling of 18742270518 in words is "eighteen billion, seven hundred forty-two million, two hundred seventy thousand, five hundred eighteen".