18169055927 has 24 divisors (see below), whose sum is σ = 20241518976. Its totient is φ = 16294850000.

The previous prime is 18169055923. The next prime is 18169055929. The reversal of 18169055927 is 72955096181.

It is a happy number.

It is not a de Polignac number, because 18169055927 - 2² = 18169055923 is a prime.

It is a super-2 number, since 2×18169055927² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18169055923) 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, 3246902 + ... + 3252492.

It is an arithmetic number, because the mean of its divisors is an integer number (843396624).

Almost surely, 2^18169055927 is an apocalyptic number.

18169055927 is a deficient number, since it is larger than the sum of its proper divisors (2072463049).

18169055927 is a wasteful number, since it uses less digits than its factorization.

18169055927 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5971 (or 5960 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 53.

The spelling of 18169055927 in words is "eighteen billion, one hundred sixty-nine million, fifty-five thousand, nine hundred twenty-seven".