189545100 has 36 divisors (see below), whose sum is σ = 548418024. Its totient is φ = 50545280.

The previous prime is 189545089. The next prime is 189545113. The reversal of 189545100 is 1545981.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 315609 + ... + 316208.

It is an arithmetic number, because the mean of its divisors is an integer number (15233834).

Almost surely, 2^189545100 is an apocalyptic number.

189545100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189545100 is an abundant number, since it is smaller than the sum of its proper divisors (358872924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

189545100 is a wasteful number, since it uses less digits than its factorization.

189545100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631834 (or 631827 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 33.

The square root of 189545100 is about 13767.5379062489. The cubic root of 189545100 is about 574.4305389202.

The spelling of 189545100 in words is "one hundred eighty-nine million, five hundred forty-five thousand, one hundred".