18427979061 has 16 divisors (see below), whose sum is σ = 27314925120. Its totient is φ = 12278922480.

The previous prime is 18427979057. The next prime is 18427979099. The reversal of 18427979061 is 16097972481.

It is not a de Polignac number, because 18427979061 - 2² = 18427979057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18427978989 and 18427979007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18427979041) 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, 124590 + ... + 228863.

It is an arithmetic number, because the mean of its divisors is an integer number (1707182820).

Almost surely, 2^18427979061 is an apocalyptic number.

It is an amenable number.

18427979061 is a deficient number, since it is larger than the sum of its proper divisors (8886946059).

18427979061 is a wasteful number, since it uses less digits than its factorization.

18427979061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355393 (or 355387 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 54.

The spelling of 18427979061 in words is "eighteen billion, four hundred twenty-seven million, nine hundred seventy-nine thousand, sixty-one".