189674959 has 2 divisors, whose sum is σ = 189674960. Its totient is φ = 189674958.

The previous prime is 189674921. The next prime is 189675007. The reversal of 189674959 is 959476981.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 189674959 - 2¹³ = 189666767 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189678959) 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 as a sum of consecutive naturals, namely, 94837479 + 94837480.

It is an arithmetic number, because the mean of its divisors is an integer number (94837480).

Almost surely, 2^189674959 is an apocalyptic number.

189674959 is a deficient number, since it is larger than the sum of its proper divisors (1).

189674959 is an equidigital number, since it uses as much as digits as its factorization.

189674959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4898880, while the sum is 58.

The square root of 189674959 is about 13772.2532288656. The cubic root of 189674959 is about 574.5616914297.

The spelling of 189674959 in words is "one hundred eighty-nine million, six hundred seventy-four thousand, nine hundred fifty-nine".