190233079921 has 4 divisors (see below), whose sum is σ = 190264328100. Its totient is φ = 190201831744.

The previous prime is 190233079891. The next prime is 190233079931. The reversal of 190233079921 is 129970332091.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 47681526321 + 142551553600 = 218361^2 + 377560^2 .

It is a cyclic number.

It is not a de Polignac number, because 190233079921 - 2⁵ = 190233079889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (190233079931) 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, 15614956 + ... + 15627133.

It is an arithmetic number, because the mean of its divisors is an integer number (47566082025).

Almost surely, 2^190233079921 is an apocalyptic number.

It is an amenable number.

190233079921 is a deficient number, since it is larger than the sum of its proper divisors (31248179).

190233079921 is an equidigital number, since it uses as much as digits as its factorization.

190233079921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31248178.

The product of its (nonzero) digits is 183708, while the sum is 46.

The spelling of 190233079921 in words is "one hundred ninety billion, two hundred thirty-three million, seventy-nine thousand, nine hundred twenty-one".