199011880 has 16 divisors (see below), whose sum is σ = 447776820. Its totient is φ = 79604736.

The previous prime is 199011821. The next prime is 199011881. The reversal of 199011880 is 88110991.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 194825764 + 4186116 = 13958^2 + 2046^2 .

It is a super-2 number, since 2×199011880² = 79211456762268800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (199011881) 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, 2487609 + ... + 2487688.

Almost surely, 2^199011880 is an apocalyptic number.

199011880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199011880 is an abundant number, since it is smaller than the sum of its proper divisors (248764940).

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

199011880 is a wasteful number, since it uses less digits than its factorization.

199011880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4975308 (or 4975304 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 37.

The square root of 199011880 is about 14107.1570488175. The cubic root of 199011880 is about 583.8388637190.

The spelling of 199011880 in words is "one hundred ninety-nine million, eleven thousand, eight hundred eighty".