18201801792 has 112 divisors (see below), whose sum is σ = 50742291200. Its totient is φ = 5742420480.

The previous prime is 18201801767. The next prime is 18201801797. The reversal of 18201801792 is 29710810281.

It is a super-2 number, since 2×18201801792² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18201801792.

It is not an unprimeable number, because it can be changed into a prime (18201801797) 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, 5583459 + ... + 5586717.

Almost surely, 2^18201801792 is an apocalyptic number.

18201801792 is a gapful number since it is divisible by the number (12) 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 18201801792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25371145600).

18201801792 is an abundant number, since it is smaller than the sum of its proper divisors (32540489408).

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

18201801792 is a wasteful number, since it uses less digits than its factorization.

18201801792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4824 (or 4814 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 39.

The spelling of 18201801792 in words is "eighteen billion, two hundred one million, eight hundred one thousand, seven hundred ninety-two".