36918966981899 has 2 divisors, whose sum is σ = 36918966981900. Its totient is φ = 36918966981898.

The previous prime is 36918966981877. The next prime is 36918966981917. The reversal of 36918966981899 is 99818966981963.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 36918966981899 - 2²⁴ = 36918950204683 is a prime.

It is not a weakly prime, because it can be changed into another prime (36918966981499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18459483490949 + 18459483490950.

It is an arithmetic number, because the mean of its divisors is an integer number (18459483490950).

Almost surely, 2^{36918966981899} is an apocalyptic number.

36918966981899 is a deficient number, since it is larger than the sum of its proper divisors (1).

36918966981899 is an equidigital number, since it uses as much as digits as its factorization.

36918966981899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19591041024, while the sum is 92.

The spelling of 36918966981899 in words is "thirty-six trillion, nine hundred eighteen billion, nine hundred sixty-six million, nine hundred eighty-one thousand, eight hundred ninety-nine".