189352090 has 8 divisors (see below), whose sum is σ = 340833780. Its totient is φ = 75740832.

The previous prime is 189352087. The next prime is 189352099. The reversal of 189352090 is 90253981.

It can be written as a sum of positive squares in 2 ways, for example, as 175536001 + 13816089 = 13249^2 + 3717^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (189352099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9467595 + ... + 9467614.

Almost surely, 2^189352090 is an apocalyptic number.

189352090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189352090 is a deficient number, since it is larger than the sum of its proper divisors (151481690).

189352090 is a wasteful number, since it uses less digits than its factorization.

189352090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18935216.

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

The square root of 189352090 is about 13760.5265160894. The cubic root of 189352090 is about 574.2354956435.

It can be divided in two parts, 18935 and 2090, that added together give a square (21025 = 145²).

The spelling of 189352090 in words is "one hundred eighty-nine million, three hundred fifty-two thousand, ninety".