18502185022 has 4 divisors (see below), whose sum is σ = 27753277536. Its totient is φ = 9251092510.

The previous prime is 18502184947. The next prime is 18502185041. The reversal of 18502185022 is 22058120581.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×18502185022² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4625546254 + ... + 4625546257.

It is an arithmetic number, because the mean of its divisors is an integer number (6938319384).

Almost surely, 2^18502185022 is an apocalyptic number.

18502185022 is a deficient number, since it is larger than the sum of its proper divisors (9251092514).

18502185022 is an equidigital number, since it uses as much as digits as its factorization.

18502185022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9251092513.

The product of its (nonzero) digits is 12800, while the sum is 34.

The spelling of 18502185022 in words is "eighteen billion, five hundred two million, one hundred eighty-five thousand, twenty-two".