189423233 has 2 divisors, whose sum is σ = 189423234. Its totient is φ = 189423232.

The previous prime is 189423203. The next prime is 189423259. The reversal of 189423233 is 332324981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 185858689 + 3564544 = 13633^2 + 1888^2 .

It is a cyclic number.

It is not a de Polignac number, because 189423233 - 2¹⁰ = 189422209 is a prime.

It is a super-2 number, since 2×189423233² = 71762322400344578, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 189423193 and 189423202.

It is not a weakly prime, because it can be changed into another prime (189423203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94711616 + 94711617.

It is an arithmetic number, because the mean of its divisors is an integer number (94711617).

Almost surely, 2^189423233 is an apocalyptic number.

It is an amenable number.

189423233 is a deficient number, since it is larger than the sum of its proper divisors (1).

189423233 is an equidigital number, since it uses as much as digits as its factorization.

189423233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 35.

The square root of 189423233 is about 13763.1113124904. Note that the first 3 decimals coincide. The cubic root of 189423233 is about 574.3074035208.

The spelling of 189423233 in words is "one hundred eighty-nine million, four hundred twenty-three thousand, two hundred thirty-three".