36539381 has 2 divisors, whose sum is σ = 36539382. Its totient is φ = 36539380.

The previous prime is 36539311. The next prime is 36539401. The reversal of 36539381 is 18393563.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30580900 + 5958481 = 5530^2 + 2441^2 .

It is a cyclic number.

It is not a de Polignac number, because 36539381 - 2¹⁰ = 36538357 is a prime.

It is a super-2 number, since 2×36539381² = 2670252727726322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36539311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18269690 + 18269691.

It is an arithmetic number, because the mean of its divisors is an integer number (18269691).

Almost surely, 2^36539381 is an apocalyptic number.

It is an amenable number.

36539381 is a deficient number, since it is larger than the sum of its proper divisors (1).

36539381 is an equidigital number, since it uses as much as digits as its factorization.

36539381 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 36539381 is about 6044.7813029091. The cubic root of 36539381 is about 331.8336279929.

The spelling of 36539381 in words is "thirty-six million, five hundred thirty-nine thousand, three hundred eighty-one".