23698902949 has 2 divisors, whose sum is σ = 23698902950. Its totient is φ = 23698902948.

The previous prime is 23698902947. The next prime is 23698902961. The reversal of 23698902949 is 94920989632.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22437942849 + 1260960100 = 149793^2 + 35510^2 .

It is a cyclic number.

It is not a de Polignac number, because 23698902949 - 2¹ = 23698902947 is a prime.

It is a super-2 number, since 2×23698902949² (a number of 22 digits) contains 22 as substring.

Together with 23698902947, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23698902947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11849451474 + 11849451475.

It is an arithmetic number, because the mean of its divisors is an integer number (11849451475).

Almost surely, 2^23698902949 is an apocalyptic number.

It is an amenable number.

23698902949 is a deficient number, since it is larger than the sum of its proper divisors (1).

23698902949 is an equidigital number, since it uses as much as digits as its factorization.

23698902949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15116544, while the sum is 61.

The spelling of 23698902949 in words is "twenty-three billion, six hundred ninety-eight million, nine hundred two thousand, nine hundred forty-nine".