18693114577 has 2 divisors, whose sum is σ = 18693114578. Its totient is φ = 18693114576.

The previous prime is 18693114571. The next prime is 18693114589. The reversal of 18693114577 is 77541139681.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16945790976 + 1747323601 = 130176^2 + 41801^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18693114577 is a prime.

It is not a weakly prime, because it can be changed into another prime (18693114571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9346557288 + 9346557289.

It is an arithmetic number, because the mean of its divisors is an integer number (9346557289).

Almost surely, 2^18693114577 is an apocalyptic number.

It is an amenable number.

18693114577 is a deficient number, since it is larger than the sum of its proper divisors (1).

18693114577 is an equidigital number, since it uses as much as digits as its factorization.

18693114577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1270080, while the sum is 52.

The spelling of 18693114577 in words is "eighteen billion, six hundred ninety-three million, one hundred fourteen thousand, five hundred seventy-seven".