190866860 has 12 divisors (see below), whose sum is σ = 400820448. Its totient is φ = 76346736.

The previous prime is 190866827. The next prime is 190866887. The reversal of 190866860 is 68668091.

190866860 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4771652 + ... + 4771691.

It is an arithmetic number, because the mean of its divisors is an integer number (33401704).

Almost surely, 2^190866860 is an apocalyptic number.

190866860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

190866860 is an abundant number, since it is smaller than the sum of its proper divisors (209953588).

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

190866860 is a wasteful number, since it uses less digits than its factorization.

190866860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9543352 (or 9543350 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 44.

The square root of 190866860 is about 13815.4572852295. The cubic root of 190866860 is about 575.7626779206.

The spelling of 190866860 in words is "one hundred ninety million, eight hundred sixty-six thousand, eight hundred sixty".