18918046524979 has 16 divisors (see below), whose sum is σ = 21676462617600. Its totient is φ = 16173597110400.

The previous prime is 18918046524959. The next prime is 18918046524989. The reversal of 18918046524979 is 97942564081981.

It is a cyclic number.

It is not a de Polignac number, because 18918046524979 - 2¹¹ = 18918046522931 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18918046524929) 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, 31995972 + ... + 32581870.

It is an arithmetic number, because the mean of its divisors is an integer number (1354778913600).

Almost surely, 2^{18918046524979} is an apocalyptic number.

18918046524979 is a deficient number, since it is larger than the sum of its proper divisors (2758416092621).

18918046524979 is a wasteful number, since it uses less digits than its factorization.

18918046524979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597810.

The product of its (nonzero) digits is 313528320, while the sum is 73.

The spelling of 18918046524979 in words is "eighteen trillion, nine hundred eighteen billion, forty-six million, five hundred twenty-four thousand, nine hundred seventy-nine".