18495542736 has 120 divisors (see below), whose sum is σ = 58922675136. Its totient is φ = 5361016320.

The previous prime is 18495542707. The next prime is 18495542777. The reversal of 18495542736 is 63724559481.

It is a happy number.

18495542736 is a `hidden beast` number, since 1 + 8 + 4 + 95 + 542 + 7 + 3 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 217405 + ... + 290268.

Almost surely, 2^18495542736 is an apocalyptic number.

18495542736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18495542736 is an abundant number, since it is smaller than the sum of its proper divisors (40427132400).

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

18495542736 is a wasteful number, since it uses less digits than its factorization.

18495542736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507721 (or 507712 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 54.

The spelling of 18495542736 in words is "eighteen billion, four hundred ninety-five million, five hundred forty-two thousand, seven hundred thirty-six".