18482978799 has 24 divisors (see below), whose sum is σ = 28394900352. Its totient is φ = 11545136640.

The previous prime is 18482978677. The next prime is 18482978809. The reversal of 18482978799 is 99787928481.

18482978799 is a `hidden beast` number, since 1 + 8 + 482 + 9 + 78 + 79 + 9 = 666.

It is not a de Polignac number, because 18482978799 - 2⁸ = 18482978543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18482978299) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 236742 + ... + 304979.

It is an arithmetic number, because the mean of its divisors is an integer number (1183120848).

Almost surely, 2^18482978799 is an apocalyptic number.

18482978799 is a deficient number, since it is larger than the sum of its proper divisors (9911921553).

18482978799 is a wasteful number, since it uses less digits than its factorization.

18482978799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541967 (or 541964 counting only the distinct ones).

The product of its digits is 146313216, while the sum is 72.

The spelling of 18482978799 in words is "eighteen billion, four hundred eighty-two million, nine hundred seventy-eight thousand, seven hundred ninety-nine".