189730863 has 32 divisors (see below), whose sum is σ = 340139520. Its totient is φ = 102038400.

The previous prime is 189730861. The next prime is 189730883. The reversal of 189730863 is 368037981.

It is a happy number.

189730863 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 189730863 - 2¹ = 189730861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189730861) 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, 26313 + ... + 32738.

It is an arithmetic number, because the mean of its divisors is an integer number (10629360).

Almost surely, 2^189730863 is an apocalyptic number.

189730863 is a deficient number, since it is larger than the sum of its proper divisors (150408657).

189730863 is a wasteful number, since it uses less digits than its factorization.

189730863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59084 (or 59078 counting only the distinct ones).

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

The square root of 189730863 is about 13774.2826673479. The cubic root of 189730863 is about 574.6181338507.

The spelling of 189730863 in words is "one hundred eighty-nine million, seven hundred thirty thousand, eight hundred sixty-three".