18106177613 has 2 divisors, whose sum is σ = 18106177614. Its totient is φ = 18106177612.

The previous prime is 18106177597. The next prime is 18106177643. The reversal of 18106177613 is 31677160181.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16446267049 + 1659910564 = 128243^2 + 40742^2 .

It is an emirp because it is prime and its reverse (31677160181) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18106177613 - 2⁴ = 18106177597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18106177643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9053088806 + 9053088807.

It is an arithmetic number, because the mean of its divisors is an integer number (9053088807).

Almost surely, 2^18106177613 is an apocalyptic number.

It is an amenable number.

18106177613 is a deficient number, since it is larger than the sum of its proper divisors (1).

18106177613 is an equidigital number, since it uses as much as digits as its factorization.

18106177613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 41.

The spelling of 18106177613 in words is "eighteen billion, one hundred six million, one hundred seventy-seven thousand, six hundred thirteen".