18201818382 has 16 divisors (see below), whose sum is σ = 39713058432. Its totient is φ = 5515702520.

The previous prime is 18201818381. The next prime is 18201818387. The reversal of 18201818382 is 28381810281.

It is a super-2 number, since 2×18201818382² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18201818381) 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, 137892498 + ... + 137892629.

It is an arithmetic number, because the mean of its divisors is an integer number (2482066152).

Almost surely, 2^18201818382 is an apocalyptic number.

18201818382 is an abundant number, since it is smaller than the sum of its proper divisors (21511240050).

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

18201818382 is a wasteful number, since it uses less digits than its factorization.

18201818382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275785143.

The product of its (nonzero) digits is 49152, while the sum is 42.

The spelling of 18201818382 in words is "eighteen billion, two hundred one million, eight hundred eighteen thousand, three hundred eighty-two".