18109026113 has 2 divisors, whose sum is σ = 18109026114. Its totient is φ = 18109026112.

The previous prime is 18109026097. The next prime is 18109026119. The reversal of 18109026113 is 31162090181.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14286942784 + 3822083329 = 119528^2 + 61823^2 .

It is a cyclic number.

It is not a de Polignac number, because 18109026113 - 2⁴ = 18109026097 is a prime.

It is a super-2 number, since 2×18109026113² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18109026113.

It is not a weakly prime, because it can be changed into another prime (18109026119) 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, 9054513056 + 9054513057.

It is an arithmetic number, because the mean of its divisors is an integer number (9054513057).

Almost surely, 2^18109026113 is an apocalyptic number.

It is an amenable number.

18109026113 is a deficient number, since it is larger than the sum of its proper divisors (1).

18109026113 is an equidigital number, since it uses as much as digits as its factorization.

18109026113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 32.

The spelling of 18109026113 in words is "eighteen billion, one hundred nine million, twenty-six thousand, one hundred thirteen".