361413509 has 2 divisors, whose sum is σ = 361413510. Its totient is φ = 361413508.

The previous prime is 361413499. The next prime is 361413539. The reversal of 361413509 is 905314163.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 354004225 + 7409284 = 18815^2 + 2722^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-361413509 is a prime.

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 (361413539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180706754 + 180706755.

It is an arithmetic number, because the mean of its divisors is an integer number (180706755).

Almost surely, 2^361413509 is an apocalyptic number.

It is an amenable number.

361413509 is a deficient number, since it is larger than the sum of its proper divisors (1).

361413509 is an equidigital number, since it uses as much as digits as its factorization.

361413509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 361413509 is about 19010.8787014172. The cubic root of 361413509 is about 712.3085006640.

The spelling of 361413509 in words is "three hundred sixty-one million, four hundred thirteen thousand, five hundred nine".