36391513 has 2 divisors, whose sum is σ = 36391514. Its totient is φ = 36391512.

The previous prime is 36391499. The next prime is 36391541. The reversal of 36391513 is 31519363.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32114889 + 4276624 = 5667^2 + 2068^2 .

It is an emirp because it is prime and its reverse (31519363) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36391513 is a prime.

It is not a weakly prime, because it can be changed into another prime (36392513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18195756 + 18195757.

It is an arithmetic number, because the mean of its divisors is an integer number (18195757).

Almost surely, 2^36391513 is an apocalyptic number.

It is an amenable number.

36391513 is a deficient number, since it is larger than the sum of its proper divisors (1).

36391513 is an equidigital number, since it uses as much as digits as its factorization.

36391513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7290, while the sum is 31.

The square root of 36391513 is about 6032.5378573201. The cubic root of 36391513 is about 331.3854000641.

The spelling of 36391513 in words is "thirty-six million, three hundred ninety-one thousand, five hundred thirteen".