36816991 has 2 divisors, whose sum is σ = 36816992. Its totient is φ = 36816990.

The previous prime is 36816959. The next prime is 36817009. The reversal of 36816991 is 19961863.

36816991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 36816991 - 2⁵ = 36816959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36813991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18408495 + 18408496.

It is an arithmetic number, because the mean of its divisors is an integer number (18408496).

Almost surely, 2^36816991 is an apocalyptic number.

36816991 is a deficient number, since it is larger than the sum of its proper divisors (1).

36816991 is an equidigital number, since it uses as much as digits as its factorization.

36816991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 43.

The square root of 36816991 is about 6067.7006353313. The cubic root of 36816991 is about 332.6718835429.

The spelling of 36816991 in words is "thirty-six million, eight hundred sixteen thousand, nine hundred ninety-one".