18385533354 has 64 divisors (see below), whose sum is σ = 39579217920. Its totient is φ = 5672835840.

The previous prime is 18385533347. The next prime is 18385533379. The reversal of 18385533354 is 45333558381.

It is a super-2 number, since 2×18385533354² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3176347 + ... + 3182129.

It is an arithmetic number, because the mean of its divisors is an integer number (618425280).

Almost surely, 2^18385533354 is an apocalyptic number.

18385533354 is an abundant number, since it is smaller than the sum of its proper divisors (21193684566).

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

18385533354 is a wasteful number, since it uses less digits than its factorization.

18385533354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6315.

The product of its digits is 2592000, while the sum is 48.

The spelling of 18385533354 in words is "eighteen billion, three hundred eighty-five million, five hundred thirty-three thousand, three hundred fifty-four".