189305995 has 16 divisors (see below), whose sum is σ = 239956992. Its totient is φ = 143146080.

The previous prime is 189305981. The next prime is 189306001. The reversal of 189305995 is 599503981.

It is a happy number.

It is not a de Polignac number, because 189305995 - 2⁷ = 189305867 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7537 + ... + 20866.

It is an arithmetic number, because the mean of its divisors is an integer number (14997312).

Almost surely, 2^189305995 is an apocalyptic number.

189305995 is a deficient number, since it is larger than the sum of its proper divisors (50650997).

189305995 is a wasteful number, since it uses less digits than its factorization.

189305995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28482.

The product of its (nonzero) digits is 437400, while the sum is 49.

The square root of 189305995 is about 13758.8515145705. The cubic root of 189305995 is about 574.1888954479.

The spelling of 189305995 in words is "one hundred eighty-nine million, three hundred five thousand, nine hundred ninety-five".