18183696234181 has 2 divisors, whose sum is σ = 18183696234182. Its totient is φ = 18183696234180.

The previous prime is 18183696234173. The next prime is 18183696234331. The reversal of 18183696234181 is 18143269638181.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15901224917956 + 2282471316225 = 3987634^2 + 1510785^2 .

It is a cyclic number.

It is not a de Polignac number, because 18183696234181 - 2³ = 18183696234173 is a prime.

It is a super-2 number, since 2×18183696234181² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18183696235181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9091848117090 + 9091848117091.

It is an arithmetic number, because the mean of its divisors is an integer number (9091848117091).

Almost surely, 2^{18183696234181} is an apocalyptic number.

It is an amenable number.

18183696234181 is a deficient number, since it is larger than the sum of its proper divisors (1).

18183696234181 is an equidigital number, since it uses as much as digits as its factorization.

18183696234181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11943936, while the sum is 61.

The spelling of 18183696234181 in words is "eighteen trillion, one hundred eighty-three billion, six hundred ninety-six million, two hundred thirty-four thousand, one hundred eighty-one".