189038273 has 2 divisors, whose sum is σ = 189038274. Its totient is φ = 189038272.

The previous prime is 189038257. The next prime is 189038287. The reversal of 189038273 is 372830981.

189038273 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141538609 + 47499664 = 11897^2 + 6892^2 .

It is a cyclic number.

It is not a de Polignac number, because 189038273 - 2⁴ = 189038257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 189038273.

It is not a weakly prime, because it can be changed into another prime (189038203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94519136 + 94519137.

It is an arithmetic number, because the mean of its divisors is an integer number (94519137).

Almost surely, 2^189038273 is an apocalyptic number.

It is an amenable number.

189038273 is a deficient number, since it is larger than the sum of its proper divisors (1).

189038273 is an equidigital number, since it uses as much as digits as its factorization.

189038273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 189038273 is about 13749.1189899571. The cubic root of 189038273 is about 573.9180895797.

The spelling of 189038273 in words is "one hundred eighty-nine million, thirty-eight thousand, two hundred seventy-three".