18495198720 has 160 divisors (see below), whose sum is σ = 65696732640. Its totient is φ = 4932034560.

The previous prime is 18495198707. The next prime is 18495198763. The reversal of 18495198720 is 2789159481.

It is a happy number.

18495198720 is a `hidden beast` number, since 1 + 8 + 49 + 519 + 87 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 64671 + ... + 202910.

It is an arithmetic number, because the mean of its divisors is an integer number (410604579).

Almost surely, 2^18495198720 is an apocalyptic number.

18495198720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18495198720 is an abundant number, since it is smaller than the sum of its proper divisors (47201533920).

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

18495198720 is an equidigital number, since it uses as much as digits as its factorization.

18495198720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267613 (or 267591 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 54.

The spelling of 18495198720 in words is "eighteen billion, four hundred ninety-five million, one hundred ninety-eight thousand, seven hundred twenty".