18573017316 has 48 divisors (see below), whose sum is σ = 51681444864. Its totient is φ = 5075855136.

The previous prime is 18573017311. The next prime is 18573017329. The reversal of 18573017316 is 61371037581.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (18573017311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4804750 + ... + 4808613.

It is an arithmetic number, because the mean of its divisors is an integer number (1076696768).

Almost surely, 2^18573017316 is an apocalyptic number.

It is an amenable number.

18573017316 is an abundant number, since it is smaller than the sum of its proper divisors (33108427548).

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

18573017316 is a wasteful number, since it uses less digits than its factorization.

18573017316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9613400 (or 9613398 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 42.

The spelling of 18573017316 in words is "eighteen billion, five hundred seventy-three million, seventeen thousand, three hundred sixteen".