189200890 has 8 divisors (see below), whose sum is σ = 340561620. Its totient is φ = 75680352.

The previous prime is 189200887. The next prime is 189200909. The reversal of 189200890 is 98002981.

It can be written as a sum of positive squares in 2 ways, for example, as 189090001 + 110889 = 13751^2 + 333^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9460035 + ... + 9460054.

Almost surely, 2^189200890 is an apocalyptic number.

189200890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189200890 is a deficient number, since it is larger than the sum of its proper divisors (151360730).

189200890 is a wasteful number, since it uses less digits than its factorization.

189200890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18920096.

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 189200890 is about 13755.0314430757. The cubic root of 189200890 is about 574.0826102131.

The spelling of 189200890 in words is "one hundred eighty-nine million, two hundred thousand, eight hundred ninety".