23918231949 has 16 divisors (see below), whose sum is σ = 32375790912. Its totient is φ = 15703728768.

The previous prime is 23918231879. The next prime is 23918231969. The reversal of 23918231949 is 94913281932.

It is not a de Polignac number, because 23918231949 - 2²⁰ = 23917183373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23918231969) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67602 + ... + 228924.

It is an arithmetic number, because the mean of its divisors is an integer number (2023486932).

Almost surely, 2^23918231949 is an apocalyptic number.

It is an amenable number.

23918231949 is a deficient number, since it is larger than the sum of its proper divisors (8457558963).

23918231949 is a wasteful number, since it uses less digits than its factorization.

23918231949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162076.

The product of its digits is 839808, while the sum is 51.

The spelling of 23918231949 in words is "twenty-three billion, nine hundred eighteen million, two hundred thirty-one thousand, nine hundred forty-nine".