23897938749 has 8 divisors (see below), whose sum is σ = 31982372640. Its totient is φ = 15872732016.

The previous prime is 23897938721. The next prime is 23897938811. The reversal of 23897938749 is 94783979832.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23897938749 - 2¹¹ = 23897936701 is a prime.

It is a super-2 number, since 2×23897938749² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23897938709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14805847 + ... + 14807460.

It is an arithmetic number, because the mean of its divisors is an integer number (3997796580).

Almost surely, 2^23897938749 is an apocalyptic number.

It is an amenable number.

23897938749 is a deficient number, since it is larger than the sum of its proper divisors (8084433891).

23897938749 is a wasteful number, since it uses less digits than its factorization.

23897938749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29613579.

The product of its digits is 164602368, while the sum is 69.

The spelling of 23897938749 in words is "twenty-three billion, eight hundred ninety-seven million, nine hundred thirty-eight thousand, seven hundred forty-nine".