23438835191 has 2 divisors, whose sum is σ = 23438835192. Its totient is φ = 23438835190.

The previous prime is 23438835113. The next prime is 23438835209. The reversal of 23438835191 is 19153883432.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23438835191 - 2¹⁴ = 23438818807 is a prime.

It is a super-2 number, since 2×23438835191² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23438885191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11719417595 + 11719417596.

It is an arithmetic number, because the mean of its divisors is an integer number (11719417596).

Almost surely, 2^23438835191 is an apocalyptic number.

23438835191 is a deficient number, since it is larger than the sum of its proper divisors (1).

23438835191 is an equidigital number, since it uses as much as digits as its factorization.

23438835191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 47.

The spelling of 23438835191 in words is "twenty-three billion, four hundred thirty-eight million, eight hundred thirty-five thousand, one hundred ninety-one".