18427979071 has 8 divisors (see below), whose sum is σ = 18821980800. Its totient is φ = 18037712280.

The previous prime is 18427979057. The next prime is 18427979099. The reversal of 18427979071 is 17097972481.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18427979071 - 2¹¹ = 18427977023 is a prime.

It is a Duffinian number.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 923761 + ... + 943498.

It is an arithmetic number, because the mean of its divisors is an integer number (2352747600).

Almost surely, 2^18427979071 is an apocalyptic number.

18427979071 is a deficient number, since it is larger than the sum of its proper divisors (394001729).

18427979071 is a wasteful number, since it uses less digits than its factorization.

18427979071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1867469.

The product of its (nonzero) digits is 1778112, while the sum is 55.

The spelling of 18427979071 in words is "eighteen billion, four hundred twenty-seven million, nine hundred seventy-nine thousand, seventy-one".