189368307 has 32 divisors (see below), whose sum is σ = 296352000. Its totient is φ = 119180160.

The previous prime is 189368261. The next prime is 189368323. The reversal of 189368307 is 703863981.

It is a happy number.

It is not a de Polignac number, because 189368307 - 2¹² = 189364211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (189361307) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 214507 + ... + 215387.

It is an arithmetic number, because the mean of its divisors is an integer number (9261000).

Almost surely, 2^189368307 is an apocalyptic number.

189368307 is a deficient number, since it is larger than the sum of its proper divisors (106983693).

189368307 is a wasteful number, since it uses less digits than its factorization.

189368307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328 (or 1322 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 189368307 is about 13761.1157614490. The cubic root of 189368307 is about 574.2518885815.

The spelling of 189368307 in words is "one hundred eighty-nine million, three hundred sixty-eight thousand, three hundred seven".