18674363004449 has 2 divisors, whose sum is σ = 18674363004450. Its totient is φ = 18674363004448.

The previous prime is 18674363004443. The next prime is 18674363004481. The reversal of 18674363004449 is 94440036347681.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16194241978849 + 2480121025600 = 4024207^2 + 1574840^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18674363004449 is a prime.

It is not a weakly prime, because it can be changed into another prime (18674363004443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9337181502224 + 9337181502225.

It is an arithmetic number, because the mean of its divisors is an integer number (9337181502225).

Almost surely, 2^{18674363004449} is an apocalyptic number.

It is an amenable number.

18674363004449 is a deficient number, since it is larger than the sum of its proper divisors (1).

18674363004449 is an equidigital number, since it uses as much as digits as its factorization.

18674363004449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41803776, while the sum is 59.

The spelling of 18674363004449 in words is "eighteen trillion, six hundred seventy-four billion, three hundred sixty-three million, four thousand, four hundred forty-nine".