2318579509 has 2 divisors, whose sum is σ = 2318579510. Its totient is φ = 2318579508.

The previous prime is 2318579489. The next prime is 2318579537. The reversal of 2318579509 is 9059758132.

2318579509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1445672484 + 872907025 = 38022^2 + 29545^2 .

It is a cyclic number.

It is not a de Polignac number, because 2318579509 - 2⁵ = 2318579477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2318579569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1159289754 + 1159289755.

It is an arithmetic number, because the mean of its divisors is an integer number (1159289755).

Almost surely, 2^2318579509 is an apocalyptic number.

It is an amenable number.

2318579509 is a deficient number, since it is larger than the sum of its proper divisors (1).

2318579509 is an equidigital number, since it uses as much as digits as its factorization.

2318579509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 680400, while the sum is 49.

The square root of 2318579509 is about 48151.6303877657. The cubic root of 2318579509 is about 1323.5509510982.

The spelling of 2318579509 in words is "two billion, three hundred eighteen million, five hundred seventy-nine thousand, five hundred nine".