23018689 has 2 divisors, whose sum is σ = 23018690. Its totient is φ = 23018688.

The previous prime is 23018687. The next prime is 23018701. The reversal of 23018689 is 98681032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13359025 + 9659664 = 3655^2 + 3108^2 .

It is a cyclic number.

It is not a de Polignac number, because 23018689 - 2¹ = 23018687 is a prime.

Together with 23018687, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (23018687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11509344 + 11509345.

It is an arithmetic number, because the mean of its divisors is an integer number (11509345).

Almost surely, 2^23018689 is an apocalyptic number.

It is an amenable number.

23018689 is a deficient number, since it is larger than the sum of its proper divisors (1).

23018689 is an equidigital number, since it uses as much as digits as its factorization.

23018689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 23018689 is about 4797.7795906023. The cubic root of 23018689 is about 284.4637047109.

The spelling of 23018689 in words is "twenty-three million, eighteen thousand, six hundred eighty-nine".