18137716436 has 24 divisors (see below), whose sum is σ = 36283571520. Its totient is φ = 7771563072.

The previous prime is 18137716427. The next prime is 18137716439. The reversal of 18137716436 is 63461773181.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18137716439) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 58520 + ... + 199248.

It is an arithmetic number, because the mean of its divisors is an integer number (1511815480).

Almost surely, 2^18137716436 is an apocalyptic number.

It is an amenable number.

18137716436 is an abundant number, since it is smaller than the sum of its proper divisors (18145855084).

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

18137716436 is a wasteful number, since it uses less digits than its factorization.

18137716436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145343 (or 145341 counting only the distinct ones).

The product of its digits is 508032, while the sum is 47.

The spelling of 18137716436 in words is "eighteen billion, one hundred thirty-seven million, seven hundred sixteen thousand, four hundred thirty-six".