18189760417 has 2 divisors, whose sum is σ = 18189760418. Its totient is φ = 18189760416.

The previous prime is 18189760411. The next prime is 18189760469. The reversal of 18189760417 is 71406798181.

It is a happy number.

It is an a-pointer prime, because the next prime (18189760469) can be obtained adding 18189760417 to its sum of digits (52).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17192716641 + 997043776 = 131121^2 + 31576^2 .

It is a cyclic number.

It is not a de Polignac number, because 18189760417 - 2²⁷ = 18055542689 is a prime.

It is not a weakly prime, because it can be changed into another prime (18189760411) 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, 9094880208 + 9094880209.

It is an arithmetic number, because the mean of its divisors is an integer number (9094880209).

Almost surely, 2^18189760417 is an apocalyptic number.

It is an amenable number.

18189760417 is a deficient number, since it is larger than the sum of its proper divisors (1).

18189760417 is an equidigital number, since it uses as much as digits as its factorization.

18189760417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 677376, while the sum is 52.

The spelling of 18189760417 in words is "eighteen billion, one hundred eighty-nine million, seven hundred sixty thousand, four hundred seventeen".