2318409521 has 2 divisors, whose sum is σ = 2318409522. Its totient is φ = 2318409520.

The previous prime is 2318409497. The next prime is 2318409551. The reversal of 2318409521 is 1259048132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2061160000 + 257249521 = 45400^2 + 16039^2 .

It is a cyclic number.

It is not a de Polignac number, because 2318409521 - 2²² = 2314215217 is a prime.

It is not a weakly prime, because it can be changed into another prime (2318409551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1159204760 + 1159204761.

It is an arithmetic number, because the mean of its divisors is an integer number (1159204761).

Almost surely, 2^2318409521 is an apocalyptic number.

It is an amenable number.

2318409521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2318409521 is an equidigital number, since it uses as much as digits as its factorization.

2318409521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 2318409521 is about 48149.8652230720. The cubic root of 2318409521 is about 1323.5186046728.

The spelling of 2318409521 in words is "two billion, three hundred eighteen million, four hundred nine thousand, five hundred twenty-one".