189682905 has 16 divisors (see below), whose sum is σ = 311696064. Its totient is φ = 98429760.

The previous prime is 189682903. The next prime is 189682921. The reversal of 189682905 is 509286981.

It is a happy number.

It is not a de Polignac number, because 189682905 - 2¹ = 189682903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (189682901) 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, 170331 + ... + 171440.

It is an arithmetic number, because the mean of its divisors is an integer number (19481004).

Almost surely, 2^189682905 is an apocalyptic number.

189682905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

189682905 is a deficient number, since it is larger than the sum of its proper divisors (122013159).

189682905 is a wasteful number, since it uses less digits than its factorization.

189682905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341816.

The product of its (nonzero) digits is 311040, while the sum is 48.

The square root of 189682905 is about 13772.5417044204. The cubic root of 189682905 is about 574.5697146351.

The spelling of 189682905 in words is "one hundred eighty-nine million, six hundred eighty-two thousand, nine hundred five".