18145728976 has 20 divisors (see below), whose sum is σ = 36291458944. Its totient is φ = 8780191200.

The previous prime is 18145728919. The next prime is 18145728977. The reversal of 18145728976 is 67982754181.

18145728976 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 18145728976.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18145728977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18291570 + ... + 18292561.

Almost surely, 2^18145728976 is an apocalyptic number.

18145728976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18145728976 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18145728976 is a wasteful number, since it uses less digits than its factorization.

18145728976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36584170 (or 36584164 counting only the distinct ones).

The product of its digits is 6773760, while the sum is 58.

The spelling of 18145728976 in words is "eighteen billion, one hundred forty-five million, seven hundred twenty-eight thousand, nine hundred seventy-six".