18836416073 has 2 divisors, whose sum is σ = 18836416074. Its totient is φ = 18836416072.

The previous prime is 18836416031. The next prime is 18836416091. The reversal of 18836416073 is 37061463881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11323513744 + 7512902329 = 106412^2 + 86677^2 .

It is a cyclic number.

It is not a de Polignac number, because 18836416073 - 2⁸ = 18836415817 is a prime.

It is not a weakly prime, because it can be changed into another prime (18836412073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9418208036 + 9418208037.

It is an arithmetic number, because the mean of its divisors is an integer number (9418208037).

Almost surely, 2^18836416073 is an apocalyptic number.

It is an amenable number.

18836416073 is a deficient number, since it is larger than the sum of its proper divisors (1).

18836416073 is an equidigital number, since it uses as much as digits as its factorization.

18836416073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 580608, while the sum is 47.

The spelling of 18836416073 in words is "eighteen billion, eight hundred thirty-six million, four hundred sixteen thousand, seventy-three".