18144595613 has 2 divisors, whose sum is σ = 18144595614. Its totient is φ = 18144595612.

The previous prime is 18144595589. The next prime is 18144595627. The reversal of 18144595613 is 31659544181.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12877029529 + 5267566084 = 113477^2 + 72578^2 .

It is a cyclic number.

It is not a de Polignac number, because 18144595613 - 2⁶ = 18144595549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18144595643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9072297806 + 9072297807.

It is an arithmetic number, because the mean of its divisors is an integer number (9072297807).

Almost surely, 2^18144595613 is an apocalyptic number.

It is an amenable number.

18144595613 is a deficient number, since it is larger than the sum of its proper divisors (1).

18144595613 is an equidigital number, since it uses as much as digits as its factorization.

18144595613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 518400, while the sum is 47.

The spelling of 18144595613 in words is "eighteen billion, one hundred forty-four million, five hundred ninety-five thousand, six hundred thirteen".