189306733 has 16 divisors (see below), whose sum is σ = 237482496. Its totient is φ = 146597040.

The previous prime is 189306727. The next prime is 189306757. The reversal of 189306733 is 337603981.

It is a cyclic number.

It is not a de Polignac number, because 189306733 - 2⁵ = 189306701 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 (189306703) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5010 + ... + 20092.

It is an arithmetic number, because the mean of its divisors is an integer number (14842656).

Almost surely, 2^189306733 is an apocalyptic number.

It is an amenable number.

189306733 is a deficient number, since it is larger than the sum of its proper divisors (48175763).

189306733 is a wasteful number, since it uses less digits than its factorization.

189306733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15264.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 189306733 is about 13758.8783336433. The cubic root of 189306733 is about 574.1896415958.

The spelling of 189306733 in words is "one hundred eighty-nine million, three hundred six thousand, seven hundred thirty-three".