36538391 has 2 divisors, whose sum is σ = 36538392. Its totient is φ = 36538390.

The previous prime is 36538363. The next prime is 36538393. The reversal of 36538391 is 19383563.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 36538391 - 2¹⁰ = 36537367 is a prime.

Together with 36538393, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36538393) 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, 18269195 + 18269196.

It is an arithmetic number, because the mean of its divisors is an integer number (18269196).

Almost surely, 2^36538391 is an apocalyptic number.

36538391 is a deficient number, since it is larger than the sum of its proper divisors (1).

36538391 is an equidigital number, since it uses as much as digits as its factorization.

36538391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58320, while the sum is 38.

The square root of 36538391 is about 6044.6994135358. The cubic root of 36538391 is about 331.8306310597.

The spelling of 36538391 in words is "thirty-six million, five hundred thirty-eight thousand, three hundred ninety-one".