189089933 has 2 divisors, whose sum is σ = 189089934. Its totient is φ = 189089932.

The previous prime is 189089921. The next prime is 189089941. The reversal of 189089933 is 339980981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 178837129 + 10252804 = 13373^2 + 3202^2 .

It is a cyclic number.

It is not a de Polignac number, because 189089933 - 2⁴ = 189089917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189089993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94544966 + 94544967.

It is an arithmetic number, because the mean of its divisors is an integer number (94544967).

Almost surely, 2^189089933 is an apocalyptic number.

It is an amenable number.

189089933 is a deficient number, since it is larger than the sum of its proper divisors (1).

189089933 is an equidigital number, since it uses as much as digits as its factorization.

189089933 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 419904, while the sum is 50.

The square root of 189089933 is about 13750.9975274523. The cubic root of 189089933 is about 573.9703645462.

The spelling of 189089933 in words is "one hundred eighty-nine million, eighty-nine thousand, nine hundred thirty-three".