18147157122 has 32 divisors (see below), whose sum is σ = 38068353792. Its totient is φ = 5760336384.

The previous prime is 18147157117. The next prime is 18147157129. The reversal of 18147157122 is 22175174181.

It is a super-2 number, since 2×18147157122² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18147157129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 859183 + ... + 880050.

It is an arithmetic number, because the mean of its divisors is an integer number (1189636056).

Almost surely, 2^18147157122 is an apocalyptic number.

18147157122 is an abundant number, since it is smaller than the sum of its proper divisors (19921196670).

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

18147157122 is a wasteful number, since it uses less digits than its factorization.

18147157122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1739322.

The product of its digits is 31360, while the sum is 39.

The spelling of 18147157122 in words is "eighteen billion, one hundred forty-seven million, one hundred fifty-seven thousand, one hundred twenty-two".