18164684965 has 16 divisors (see below), whose sum is σ = 25381600128. Its totient is φ = 12220767936.

The previous prime is 18164684939. The next prime is 18164684987. The reversal of 18164684965 is 56948646181.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 18164684965 - 2¹⁵ = 18164652197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4894287 + ... + 4897996.

It is an arithmetic number, because the mean of its divisors is an integer number (1586350008).

Almost surely, 2^18164684965 is an apocalyptic number.

It is an amenable number.

18164684965 is a deficient number, since it is larger than the sum of its proper divisors (7216915163).

18164684965 is an equidigital number, since it uses as much as digits as its factorization.

18164684965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9792348.

The product of its digits is 9953280, while the sum is 58.

The spelling of 18164684965 in words is "eighteen billion, one hundred sixty-four million, six hundred eighty-four thousand, nine hundred sixty-five".