189140207 has 4 divisors (see below), whose sum is σ = 195241536. Its totient is φ = 183038880.

The previous prime is 189140197. The next prime is 189140209. The reversal of 189140207 is 702041981.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 189140207 - 2¹⁰ = 189139183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189140209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3050618 + ... + 3050679.

It is an arithmetic number, because the mean of its divisors is an integer number (48810384).

Almost surely, 2^189140207 is an apocalyptic number.

189140207 is a deficient number, since it is larger than the sum of its proper divisors (6101329).

189140207 is an equidigital number, since it uses as much as digits as its factorization.

189140207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6101328.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 189140207 is about 13752.8254188003. The cubic root of 189140207 is about 574.0212278730.

The spelling of 189140207 in words is "one hundred eighty-nine million, one hundred forty thousand, two hundred seven".