233402189 has 2 divisors, whose sum is σ = 233402190. Its totient is φ = 233402188.

The previous prime is 233402161. The next prime is 233402209. The reversal of 233402189 is 981204332.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 209294089 + 24108100 = 14467^2 + 4910^2 .

It is a cyclic number.

It is not a de Polignac number, because 233402189 - 2⁸ = 233401933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (233402119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116701094 + 116701095.

It is an arithmetic number, because the mean of its divisors is an integer number (116701095).

Almost surely, 2^233402189 is an apocalyptic number.

It is an amenable number.

233402189 is a deficient number, since it is larger than the sum of its proper divisors (1).

233402189 is an equidigital number, since it uses as much as digits as its factorization.

233402189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 233402189 is about 15277.5059810167. The cubic root of 233402189 is about 615.6988015966.

The spelling of 233402189 in words is "two hundred thirty-three million, four hundred two thousand, one hundred eighty-nine".