23318749 has 2 divisors, whose sum is σ = 23318750. Its totient is φ = 23318748.

The previous prime is 23318741. The next prime is 23318753. The reversal of 23318749 is 94781332.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23213124 + 105625 = 4818^2 + 325^2 .

It is a cyclic number.

It is not a de Polignac number, because 23318749 - 2³ = 23318741 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23318741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11659374 + 11659375.

It is an arithmetic number, because the mean of its divisors is an integer number (11659375).

Almost surely, 2^23318749 is an apocalyptic number.

It is an amenable number.

23318749 is a deficient number, since it is larger than the sum of its proper divisors (1).

23318749 is an equidigital number, since it uses as much as digits as its factorization.

23318749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 37.

The square root of 23318749 is about 4828.9490575072. The cubic root of 23318749 is about 285.6944141775.

The spelling of 23318749 in words is "twenty-three million, three hundred eighteen thousand, seven hundred forty-nine".