18574954482209 has 2 divisors, whose sum is σ = 18574954482210. Its totient is φ = 18574954482208.

The previous prime is 18574954482179. The next prime is 18574954482239. The reversal of 18574954482209 is 90228445947581.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (18574954482179) and next prime (18574954482239).

It can be written as a sum of positive squares in only one way, i.e., 15405742750225 + 3169211731984 = 3925015^2 + 1780228^2 .

It is a cyclic number.

It is not a de Polignac number, because 18574954482209 - 2³⁶ = 18506235005473 is a prime.

It is a super-2 number, since 2×18574954482209² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18574954482239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9287477241104 + 9287477241105.

It is an arithmetic number, because the mean of its divisors is an integer number (9287477241105).

Almost surely, 2^{18574954482209} is an apocalyptic number.

It is an amenable number.

18574954482209 is a deficient number, since it is larger than the sum of its proper divisors (1).

18574954482209 is an equidigital number, since it uses as much as digits as its factorization.

18574954482209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 232243200, while the sum is 68.

The spelling of 18574954482209 in words is "eighteen trillion, five hundred seventy-four billion, nine hundred fifty-four million, four hundred eighty-two thousand, two hundred nine".