18357132416 has 256 divisors, whose sum is σ = 46343577600. Its totient is φ = 7061852160.

The previous prime is 18357132403. The next prime is 18357132421. The reversal of 18357132416 is 61423175381.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67738361 + ... + 67738631.

It is an arithmetic number, because the mean of its divisors is an integer number (181029600).

Almost surely, 2^18357132416 is an apocalyptic number.

18357132416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18357132416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23171788800).

18357132416 is an abundant number, since it is smaller than the sum of its proper divisors (27986445184).

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

18357132416 is a wasteful number, since it uses less digits than its factorization.

18357132416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507 (or 495 counting only the distinct ones).

The product of its digits is 120960, while the sum is 41.

The spelling of 18357132416 in words is "eighteen billion, three hundred fifty-seven million, one hundred thirty-two thousand, four hundred sixteen".