199150890 has 16 divisors (see below), whose sum is σ = 477962208. Its totient is φ = 53106896.

The previous prime is 199150883. The next prime is 199150907. The reversal of 199150890 is 98051991.

It is a super-2 number, since 2×199150890² = 79322153975584200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3319152 + ... + 3319211.

It is an arithmetic number, because the mean of its divisors is an integer number (29872638).

Almost surely, 2^199150890 is an apocalyptic number.

199150890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

199150890 is an abundant number, since it is smaller than the sum of its proper divisors (278811318).

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

199150890 is a wasteful number, since it uses less digits than its factorization.

199150890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6638373.

The product of its (nonzero) digits is 29160, while the sum is 42.

The square root of 199150890 is about 14112.0831205035. The cubic root of 199150890 is about 583.9747694266.

The spelling of 199150890 in words is "one hundred ninety-nine million, one hundred fifty thousand, eight hundred ninety".