18673608786037 has 2 divisors, whose sum is σ = 18673608786038. Its totient is φ = 18673608786036.

The previous prime is 18673608786023. The next prime is 18673608786047. The reversal of 18673608786037 is 73068780637681.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15615845952721 + 3057762833316 = 3951689^2 + 1748646^2 .

It is a cyclic number.

It is not a de Polignac number, because 18673608786037 - 2²³ = 18673600397429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18673608786047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9336804393018 + 9336804393019.

It is an arithmetic number, because the mean of its divisors is an integer number (9336804393019).

Almost surely, 2^{18673608786037} is an apocalyptic number.

It is an amenable number.

18673608786037 is a deficient number, since it is larger than the sum of its proper divisors (1).

18673608786037 is an equidigital number, since it uses as much as digits as its factorization.

18673608786037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 341397504, while the sum is 70.

The spelling of 18673608786037 in words is "eighteen trillion, six hundred seventy-three billion, six hundred eight million, seven hundred eighty-six thousand, thirty-seven".