23618464489 has 9 divisors (see below), whose sum is σ = 23742519159. Its totient is φ = 23495057040.

The previous prime is 23618464423. The next prime is 23618464537. The reversal of 23618464489 is 98446481632.

The square root of 23618464489 is 153683.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 150675625 + 23467788864 = 12275^2 + 153192^2 .

It is not a de Polignac number, because 23618464489 - 2¹⁹ = 23617940201 is a prime.

It is a super-2 number, since 2×23618464489² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23618464409) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 48102534 + ... + 48103024.

Almost surely, 2^23618464489 is an apocalyptic number.

23618464489 is the 153683-rd square number.

23618464489 is the 76842-nd centered octagonal number.

It is an amenable number.

23618464489 is a deficient number, since it is larger than the sum of its proper divisors (124054670).

23618464489 is an frugal number, since it uses more digits than its factorization.

23618464489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608 (or 804 counting only the distinct ones).

The product of its digits is 7962624, while the sum is 55.

The spelling of 23618464489 in words is "twenty-three billion, six hundred eighteen million, four hundred sixty-four thousand, four hundred eighty-nine".