23091896019 has 4 divisors (see below), whose sum is σ = 30789194696. Its totient is φ = 15394597344.

The previous prime is 23091895987. The next prime is 23091896021. The reversal of 23091896019 is 91069819032.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 23091896019 - 2⁵ = 23091895987 is a prime.

It is a super-2 number, since 2×23091896019² (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 (23091896029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3848649334 + ... + 3848649339.

It is an arithmetic number, because the mean of its divisors is an integer number (7697298674).

Almost surely, 2^23091896019 is an apocalyptic number.

23091896019 is a deficient number, since it is larger than the sum of its proper divisors (7697298677).

23091896019 is an equidigital number, since it uses as much as digits as its factorization.

23091896019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7697298676.

The product of its (nonzero) digits is 209952, while the sum is 48.

The spelling of 23091896019 in words is "twenty-three billion, ninety-one million, eight hundred ninety-six thousand, nineteen".