18391614701 has 2 divisors, whose sum is σ = 18391614702. Its totient is φ = 18391614700.

The previous prime is 18391614673. The next prime is 18391614707. The reversal of 18391614701 is 10741619381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18118506025 + 273108676 = 134605^2 + 16526^2 .

It is a cyclic number.

It is not a de Polignac number, because 18391614701 - 2³⁰ = 17317872877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18391614707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9195807350 + 9195807351.

It is an arithmetic number, because the mean of its divisors is an integer number (9195807351).

Almost surely, 2^18391614701 is an apocalyptic number.

It is an amenable number.

18391614701 is a deficient number, since it is larger than the sum of its proper divisors (1).

18391614701 is an equidigital number, since it uses as much as digits as its factorization.

18391614701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 41.

The spelling of 18391614701 in words is "eighteen billion, three hundred ninety-one million, six hundred fourteen thousand, seven hundred one".