190881 has 12 divisors (see below), whose sum is σ = 279552. Its totient is φ = 125496.

The previous prime is 190871. The next prime is 190889. The reversal of 190881 is 188091.

190881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 190881 - 2⁷ = 190753 is a prime.

It is a super-2 number, since 2×190881² = 72871112322, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (190889) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1060 + ... + 1226.

It is an arithmetic number, because the mean of its divisors is an integer number (23296).

2¹⁹⁰⁸⁸¹ is an apocalyptic number.

It is an amenable number.

190881 is a deficient number, since it is larger than the sum of its proper divisors (88671).

190881 is a wasteful number, since it uses less digits than its factorization.

190881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300 (or 297 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 27.

The square root of 190881 is about 436.8993018992. The cubic root of 190881 is about 57.5776895655.

The spelling of 190881 in words is "one hundred ninety thousand, eight hundred eighty-one".