36438013 has 2 divisors, whose sum is σ = 36438014. Its totient is φ = 36438012.

The previous prime is 36438011. The next prime is 36438037. The reversal of 36438013 is 31083463.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34539129 + 1898884 = 5877^2 + 1378^2 .

It is a cyclic number.

It is not a de Polignac number, because 36438013 - 2¹ = 36438011 is a prime.

Together with 36438011, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36438011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18219006 + 18219007.

It is an arithmetic number, because the mean of its divisors is an integer number (18219007).

Almost surely, 2^36438013 is an apocalyptic number.

It is an amenable number.

36438013 is a deficient number, since it is larger than the sum of its proper divisors (1).

36438013 is an equidigital number, since it uses as much as digits as its factorization.

36438013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 36438013 is about 6036.3907262536. The cubic root of 36438013 is about 331.5264848140.

The spelling of 36438013 in words is "thirty-six million, four hundred thirty-eight thousand, thirteen".