23529891819 has 32 divisors (see below), whose sum is σ = 36555577344. Its totient is φ = 13183297920.

The previous prime is 23529891773. The next prime is 23529891829. The reversal of 23529891819 is 91819892532.

It is not a de Polignac number, because 23529891819 - 2¹⁵ = 23529859051 is a prime.

It is a super-2 number, since 2×23529891819² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23529891829) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1931662 + ... + 1943804.

It is an arithmetic number, because the mean of its divisors is an integer number (1142361792).

Almost surely, 2^23529891819 is an apocalyptic number.

23529891819 is a deficient number, since it is larger than the sum of its proper divisors (13025685525).

23529891819 is a wasteful number, since it uses less digits than its factorization.

23529891819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13947.

The product of its digits is 2799360, while the sum is 57.

The spelling of 23529891819 in words is "twenty-three billion, five hundred twenty-nine million, eight hundred ninety-one thousand, eight hundred nineteen".