2398915643 has 2 divisors, whose sum is σ = 2398915644. Its totient is φ = 2398915642.

The previous prime is 2398915619. The next prime is 2398915657. The reversal of 2398915643 is 3465198932.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2398915643 - 2¹² = 2398911547 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 2398915591 and 2398915600.

It is not a weakly prime, because it can be changed into another prime (2398915613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1199457821 + 1199457822.

It is an arithmetic number, because the mean of its divisors is an integer number (1199457822).

Almost surely, 2^2398915643 is an apocalyptic number.

2398915643 is a deficient number, since it is larger than the sum of its proper divisors (1).

2398915643 is an equidigital number, since it uses as much as digits as its factorization.

2398915643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1399680, while the sum is 50.

The square root of 2398915643 is about 48978.7264330138. The cubic root of 2398915643 is about 1338.6642297038.

The spelling of 2398915643 in words is "two billion, three hundred ninety-eight million, nine hundred fifteen thousand, six hundred forty-three".