189037207 has 4 divisors (see below), whose sum is σ = 197256240. Its totient is φ = 180818176.

The previous prime is 189037171. The next prime is 189037237. The reversal of 189037207 is 702730981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 702730981 = 47 ⋅14951723.

It is a cyclic number.

It is not a de Polignac number, because 189037207 - 2¹¹ = 189035159 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 (189037237) 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, 4109482 + ... + 4109527.

It is an arithmetic number, because the mean of its divisors is an integer number (49314060).

Almost surely, 2^189037207 is an apocalyptic number.

189037207 is a deficient number, since it is larger than the sum of its proper divisors (8219033).

189037207 is an equidigital number, since it uses as much as digits as its factorization.

189037207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8219032.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 189037207 is about 13749.0802237822. The cubic root of 189037207 is about 573.9170107897.

The spelling of 189037207 in words is "one hundred eighty-nine million, thirty-seven thousand, two hundred seven".