36389998889 has 2 divisors, whose sum is σ = 36389998890. Its totient is φ = 36389998888.

The previous prime is 36389998831. The next prime is 36389998903. The reversal of 36389998889 is 98889998363.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33038515225 + 3351483664 = 181765^2 + 57892^2 .

It is a cyclic number.

It is not a de Polignac number, because 36389998889 - 2²⁴ = 36373221673 is a prime.

It is not a weakly prime, because it can be changed into another prime (36389998789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18194999444 + 18194999445.

It is an arithmetic number, because the mean of its divisors is an integer number (18194999445).

Almost surely, 2^36389998889 is an apocalyptic number.

It is an amenable number.

36389998889 is a deficient number, since it is larger than the sum of its proper divisors (1).

36389998889 is an equidigital number, since it uses as much as digits as its factorization.

36389998889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1451188224, while the sum is 80.

The spelling of 36389998889 in words is "thirty-six billion, three hundred eighty-nine million, nine hundred ninety-eight thousand, eight hundred eighty-nine".