189051089 has 2 divisors, whose sum is σ = 189051090. Its totient is φ = 189051088.

The previous prime is 189051077. The next prime is 189051097. The reversal of 189051089 is 980150981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 186595600 + 2455489 = 13660^2 + 1567^2 .

It is a cyclic number.

It is not a de Polignac number, because 189051089 - 2¹⁶ = 188985553 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (189051059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94525544 + 94525545.

It is an arithmetic number, because the mean of its divisors is an integer number (94525545).

Almost surely, 2^189051089 is an apocalyptic number.

It is an amenable number.

189051089 is a deficient number, since it is larger than the sum of its proper divisors (1).

189051089 is an equidigital number, since it uses as much as digits as its factorization.

189051089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 41.

The square root of 189051089 is about 13749.5850482842. The cubic root of 189051089 is about 573.9310590310.

The spelling of 189051089 in words is "one hundred eighty-nine million, fifty-one thousand, eighty-nine".