189455017 has 2 divisors, whose sum is σ = 189455018. Its totient is φ = 189455016.

The previous prime is 189455011. The next prime is 189455039. The reversal of 189455017 is 710554981.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163942416 + 25512601 = 12804^2 + 5051^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189455017 is a prime.

It is not a weakly prime, because it can be changed into another prime (189455011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94727508 + 94727509.

It is an arithmetic number, because the mean of its divisors is an integer number (94727509).

Almost surely, 2^189455017 is an apocalyptic number.

It is an amenable number.

189455017 is a deficient number, since it is larger than the sum of its proper divisors (1).

189455017 is an equidigital number, since it uses as much as digits as its factorization.

189455017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50400, while the sum is 40.

The square root of 189455017 is about 13764.2659448297. The cubic root of 189455017 is about 574.3395234203.

The spelling of 189455017 in words is "one hundred eighty-nine million, four hundred fifty-five thousand, seventeen".