189281207 has 2 divisors, whose sum is σ = 189281208. Its totient is φ = 189281206.

The previous prime is 189281177. The next prime is 189281219. The reversal of 189281207 is 702182981.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 189281207 - 2⁸ = 189280951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189283207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94640603 + 94640604.

It is an arithmetic number, because the mean of its divisors is an integer number (94640604).

Almost surely, 2^189281207 is an apocalyptic number.

189281207 is a deficient number, since it is larger than the sum of its proper divisors (1).

189281207 is an equidigital number, since it uses as much as digits as its factorization.

189281207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 38.

The square root of 189281207 is about 13757.9506831505. The cubic root of 189281207 is about 574.1638326466.

The spelling of 189281207 in words is "one hundred eighty-nine million, two hundred eighty-one thousand, two hundred seven".