23418709 has 2 divisors, whose sum is σ = 23418710. Its totient is φ = 23418708.

The previous prime is 23418653. The next prime is 23418721. The reversal of 23418709 is 90781432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13527684 + 9891025 = 3678^2 + 3145^2 .

It is a cyclic number.

It is not a de Polignac number, because 23418709 - 2²¹ = 21321557 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23418779) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11709354 + 11709355.

It is an arithmetic number, because the mean of its divisors is an integer number (11709355).

Almost surely, 2^23418709 is an apocalyptic number.

It is an amenable number.

23418709 is a deficient number, since it is larger than the sum of its proper divisors (1).

23418709 is an equidigital number, since it uses as much as digits as its factorization.

23418709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 23418709 is about 4839.2880674744. The cubic root of 23418709 is about 286.1020590329.

The spelling of 23418709 in words is "twenty-three million, four hundred eighteen thousand, seven hundred nine".