18934792577 has 2 divisors, whose sum is σ = 18934792578. Its totient is φ = 18934792576.

The previous prime is 18934792571. The next prime is 18934792603. The reversal of 18934792577 is 77529743981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12768774001 + 6166018576 = 112999^2 + 78524^2 .

It is an emirp because it is prime and its reverse (77529743981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18934792577 - 2²⁰ = 18933744001 is a prime.

It is not a weakly prime, because it can be changed into another prime (18934792571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9467396288 + 9467396289.

It is an arithmetic number, because the mean of its divisors is an integer number (9467396289).

Almost surely, 2^18934792577 is an apocalyptic number.

It is an amenable number.

18934792577 is a deficient number, since it is larger than the sum of its proper divisors (1).

18934792577 is an equidigital number, since it uses as much as digits as its factorization.

18934792577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26671680, while the sum is 62.

The spelling of 18934792577 in words is "eighteen billion, nine hundred thirty-four million, seven hundred ninety-two thousand, five hundred seventy-seven".