189086273 has 2 divisors, whose sum is σ = 189086274. Its totient is φ = 189086272.

The previous prime is 189086237. The next prime is 189086281. The reversal of 189086273 is 372680981.

Together with previous prime (189086237) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 186677569 + 2408704 = 13663^2 + 1552^2 .

It is a cyclic number.

It is not a de Polignac number, because 189086273 - 2²⁴ = 172309057 is a prime.

It is not a weakly prime, because it can be changed into another prime (189086203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94543136 + 94543137.

It is an arithmetic number, because the mean of its divisors is an integer number (94543137).

Almost surely, 2^189086273 is an apocalyptic number.

It is an amenable number.

189086273 is a deficient number, since it is larger than the sum of its proper divisors (1).

189086273 is an equidigital number, since it uses as much as digits as its factorization.

189086273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 189086273 is about 13750.8644455540. The cubic root of 189086273 is about 573.9666612905.

The spelling of 189086273 in words is "one hundred eighty-nine million, eighty-six thousand, two hundred seventy-three".