36640695389 has 2 divisors, whose sum is σ = 36640695390. Its totient is φ = 36640695388.

The previous prime is 36640695383. The next prime is 36640695397. The reversal of 36640695389 is 98359604663.

36640695389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27866626489 + 8774068900 = 166933^2 + 93670^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36640695389 is a prime.

It is a super-2 number, since 2×36640695389² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36640695383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18320347694 + 18320347695.

It is an arithmetic number, because the mean of its divisors is an integer number (18320347695).

Almost surely, 2^36640695389 is an apocalyptic number.

It is an amenable number.

36640695389 is a deficient number, since it is larger than the sum of its proper divisors (1).

36640695389 is an equidigital number, since it uses as much as digits as its factorization.

36640695389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25194240, while the sum is 59.

The spelling of 36640695389 in words is "thirty-six billion, six hundred forty million, six hundred ninety-five thousand, three hundred eighty-nine".