18353372018 has 8 divisors (see below), whose sum is σ = 27996669360. Its totient is φ = 9021148900.

The previous prime is 18353372017. The next prime is 18353372047. The reversal of 18353372018 is 81027335381.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×18353372018² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18353372017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77768408 + ... + 77768643.

It is an arithmetic number, because the mean of its divisors is an integer number (3499583670).

Almost surely, 2^18353372018 is an apocalyptic number.

18353372018 is a deficient number, since it is larger than the sum of its proper divisors (9643297342).

18353372018 is a wasteful number, since it uses less digits than its factorization.

18353372018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155537112.

The product of its (nonzero) digits is 120960, while the sum is 41.

The spelling of 18353372018 in words is "eighteen billion, three hundred fifty-three million, three hundred seventy-two thousand, eighteen".