2318896649 has 2 divisors, whose sum is σ = 2318896650. Its totient is φ = 2318896648.

The previous prime is 2318896621. The next prime is 2318896681. The reversal of 2318896649 is 9466988132.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2013765625 + 305131024 = 44875^2 + 17468^2 .

It is a cyclic number.

It is not a de Polignac number, because 2318896649 - 2¹⁶ = 2318831113 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2318896594 and 2318896603.

It is not a weakly prime, because it can be changed into another prime (2318896049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1159448324 + 1159448325.

It is an arithmetic number, because the mean of its divisors is an integer number (1159448325).

Almost surely, 2^2318896649 is an apocalyptic number.

It is an amenable number.

2318896649 is a deficient number, since it is larger than the sum of its proper divisors (1).

2318896649 is an equidigital number, since it uses as much as digits as its factorization.

2318896649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4478976, while the sum is 56.

The square root of 2318896649 is about 48154.9234139148. The cubic root of 2318896649 is about 1323.6112943400.

The spelling of 2318896649 in words is "two billion, three hundred eighteen million, eight hundred ninety-six thousand, six hundred forty-nine".