189532090 has 32 divisors (see below), whose sum is σ = 377286336. Its totient is φ = 67973760.

The previous prime is 189532037. The next prime is 189532097. The reversal of 189532090 is 90235981.

189532090 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (189532097) 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, 3772 + ... + 19831.

It is an arithmetic number, because the mean of its divisors is an integer number (11790198).

Almost surely, 2^189532090 is an apocalyptic number.

189532090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189532090 is a deficient number, since it is larger than the sum of its proper divisors (187754246).

189532090 is a wasteful number, since it uses less digits than its factorization.

189532090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23694.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 189532090 is about 13767.0654098831. The cubic root of 189532090 is about 574.4173960282.

The spelling of 189532090 in words is "one hundred eighty-nine million, five hundred thirty-two thousand, ninety".