36400189997 has 2 divisors, whose sum is σ = 36400189998. Its totient is φ = 36400189996.

The previous prime is 36400189981. The next prime is 36400190017. The reversal of 36400189997 is 79998100463.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36394719076 + 5470921 = 190774^2 + 2339^2 .

It is a cyclic number.

It is not a de Polignac number, because 36400189997 - 2⁴ = 36400189981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36400189957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18200094998 + 18200094999.

It is an arithmetic number, because the mean of its divisors is an integer number (18200094999).

Almost surely, 2^36400189997 is an apocalyptic number.

It is an amenable number.

36400189997 is a deficient number, since it is larger than the sum of its proper divisors (1).

36400189997 is an equidigital number, since it uses as much as digits as its factorization.

36400189997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2939328, while the sum is 56.

The spelling of 36400189997 in words is "thirty-six billion, four hundred million, one hundred eighty-nine thousand, nine hundred ninety-seven".