36391189 has 2 divisors, whose sum is σ = 36391190. Its totient is φ = 36391188.

The previous prime is 36391177. The next prime is 36391211. The reversal of 36391189 is 98119363.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33258289 + 3132900 = 5767^2 + 1770^2 .

It is a cyclic number.

It is not a de Polignac number, because 36391189 - 2⁹ = 36390677 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36391139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18195594 + 18195595.

It is an arithmetic number, because the mean of its divisors is an integer number (18195595).

Almost surely, 2^36391189 is an apocalyptic number.

It is an amenable number.

36391189 is a deficient number, since it is larger than the sum of its proper divisors (1).

36391189 is an equidigital number, since it uses as much as digits as its factorization.

36391189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 40.

The square root of 36391189 is about 6032.5110028909. The cubic root of 36391189 is about 331.3844166005.

The spelling of 36391189 in words is "thirty-six million, three hundred ninety-one thousand, one hundred eighty-nine".