189534090 has 16 divisors (see below), whose sum is σ = 454881888. Its totient is φ = 50542416.

The previous prime is 189534049. The next prime is 189534113. The reversal of 189534090 is 90435981.

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 3158872 + ... + 3158931.

It is an arithmetic number, because the mean of its divisors is an integer number (28430118).

Almost surely, 2^189534090 is an apocalyptic number.

189534090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189534090 is an abundant number, since it is smaller than the sum of its proper divisors (265347798).

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

189534090 is a wasteful number, since it uses less digits than its factorization.

189534090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6317813.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 189534090 is about 13767.1380468128. The cubic root of 189534090 is about 574.4194164966.

The spelling of 189534090 in words is "one hundred eighty-nine million, five hundred thirty-four thousand, ninety".