18357351168 has 144 divisors (see below), whose sum is σ = 53003585376. Its totient is φ = 5606768640.

The previous prime is 18357351073. The next prime is 18357351191. The reversal of 18357351168 is 86115375381.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1361098 + ... + 1374518.

It is an arithmetic number, because the mean of its divisors is an integer number (368080454).

Almost surely, 2^18357351168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18357351168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26501792688).

18357351168 is an abundant number, since it is smaller than the sum of its proper divisors (34646234208).

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

18357351168 is a wasteful number, since it uses less digits than its factorization.

18357351168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13590 (or 13576 counting only the distinct ones).

The product of its digits is 604800, while the sum is 48.

The spelling of 18357351168 in words is "eighteen billion, three hundred fifty-seven million, three hundred fifty-one thousand, one hundred sixty-eight".