189437207 has 4 divisors (see below), whose sum is σ = 192264696. Its totient is φ = 186609720.

The previous prime is 189437203. The next prime is 189437219. The reversal of 189437207 is 702734981.

189437207 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 702734981 = 13 ⋅54056537.

It is a cyclic number.

It is not a de Polignac number, because 189437207 - 2² = 189437203 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 (189437203) 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, 1413644 + ... + 1413777.

It is an arithmetic number, because the mean of its divisors is an integer number (48066174).

Almost surely, 2^189437207 is an apocalyptic number.

189437207 is a deficient number, since it is larger than the sum of its proper divisors (2827489).

189437207 is an equidigital number, since it uses as much as digits as its factorization.

189437207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2827488.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 189437207 is about 13763.6189645020. The cubic root of 189437207 is about 574.3215256433.

The spelling of 189437207 in words is "one hundred eighty-nine million, four hundred thirty-seven thousand, two hundred seven".