18836460469 has 2 divisors, whose sum is σ = 18836460470. Its totient is φ = 18836460468.

The previous prime is 18836460457. The next prime is 18836460527. The reversal of 18836460469 is 96406463881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16496319844 + 2340140625 = 128438^2 + 48375^2 .

It is a cyclic number.

It is not a de Polignac number, because 18836460469 - 2⁵ = 18836460437 is a prime.

It is a super-2 number, since 2×18836460469² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18836460569) 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, 9418230234 + 9418230235.

It is an arithmetic number, because the mean of its divisors is an integer number (9418230235).

Almost surely, 2^18836460469 is an apocalyptic number.

It is an amenable number.

18836460469 is a deficient number, since it is larger than the sum of its proper divisors (1).

18836460469 is an equidigital number, since it uses as much as digits as its factorization.

18836460469 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5971968, while the sum is 55.

The spelling of 18836460469 in words is "eighteen billion, eight hundred thirty-six million, four hundred sixty thousand, four hundred sixty-nine".