189304681 has 8 divisors (see below), whose sum is σ = 192383424. Its totient is φ = 186233520.

The previous prime is 189304679. The next prime is 189304723. The reversal of 189304681 is 186403981.

189304681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 189304681 - 2¹ = 189304679 is a prime.

It is a super-2 number, since 2×189304681² = 71672524497023522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189304601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69756 + ... + 72418.

It is an arithmetic number, because the mean of its divisors is an integer number (24047928).

Almost surely, 2^189304681 is an apocalyptic number.

It is an amenable number.

189304681 is a deficient number, since it is larger than the sum of its proper divisors (3078743).

189304681 is a wasteful number, since it uses less digits than its factorization.

189304681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3791.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 189304681 is about 13758.8037634091. The cubic root of 189304681 is about 574.1875669357.

The spelling of 189304681 in words is "one hundred eighty-nine million, three hundred four thousand, six hundred eighty-one".