18139590017 has 2 divisors, whose sum is σ = 18139590018. Its totient is φ = 18139590016.

The previous prime is 18139589999. The next prime is 18139590023. The reversal of 18139590017 is 71009593181.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17987906161 + 151683856 = 134119^2 + 12316^2 .

It is a cyclic number.

It is not a de Polignac number, because 18139590017 - 2¹⁴ = 18139573633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18139590017.

It is not a weakly prime, because it can be changed into another prime (18139590047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9069795008 + 9069795009.

It is an arithmetic number, because the mean of its divisors is an integer number (9069795009).

Almost surely, 2^18139590017 is an apocalyptic number.

It is an amenable number.

18139590017 is a deficient number, since it is larger than the sum of its proper divisors (1).

18139590017 is an equidigital number, since it uses as much as digits as its factorization.

18139590017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 68040, while the sum is 44.

The spelling of 18139590017 in words is "eighteen billion, one hundred thirty-nine million, five hundred ninety thousand, seventeen".