18006413161193 has 2 divisors, whose sum is σ = 18006413161194. Its totient is φ = 18006413161192.

The previous prime is 18006413161171. The next prime is 18006413161199. The reversal of 18006413161193 is 39116131460081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14743234654864 + 3263178506329 = 3839692^2 + 1806427^2 .

It is a cyclic number.

It is not a de Polignac number, because 18006413161193 - 2²⁰ = 18006412112617 is a prime.

It is not a weakly prime, because it can be changed into another prime (18006413161199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9003206580596 + 9003206580597.

It is an arithmetic number, because the mean of its divisors is an integer number (9003206580597).

Almost surely, 2^{18006413161193} is an apocalyptic number.

It is an amenable number.

18006413161193 is a deficient number, since it is larger than the sum of its proper divisors (1).

18006413161193 is an equidigital number, since it uses as much as digits as its factorization.

18006413161193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 44.

The spelling of 18006413161193 in words is "eighteen trillion, six billion, four hundred thirteen million, one hundred sixty-one thousand, one hundred ninety-three".