36538891 has 2 divisors, whose sum is σ = 36538892. Its totient is φ = 36538890.

The previous prime is 36538867. The next prime is 36538897. The reversal of 36538891 is 19883563.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 36538891 - 2²¹ = 34441739 is a prime.

It is not a weakly prime, because it can be changed into another prime (36538897) 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, 18269445 + 18269446.

It is an arithmetic number, because the mean of its divisors is an integer number (18269446).

Almost surely, 2^36538891 is an apocalyptic number.

36538891 is a deficient number, since it is larger than the sum of its proper divisors (1).

36538891 is an equidigital number, since it uses as much as digits as its factorization.

36538891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 43.

The square root of 36538891 is about 6044.7407719438. The cubic root of 36538891 is about 331.8321446691.

It can be divided in two parts, 3653 and 8891, that added together give a square (12544 = 112²).

The spelling of 36538891 in words is "thirty-six million, five hundred thirty-eight thousand, eight hundred ninety-one".