191144 has 8 divisors (see below), whose sum is σ = 358410. Its totient is φ = 95568.

The previous prime is 191143. The next prime is 191161. The reversal of 191144 is 441191.

191144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 122500 + 68644 = 350^2 + 262^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (191141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11939 + ... + 11954.

2¹⁹¹¹⁴⁴ is an apocalyptic number.

It is an amenable number.

191144 is a deficient number, since it is larger than the sum of its proper divisors (167266).

191144 is a wasteful number, since it uses less digits than its factorization.

191144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23899 (or 23895 counting only the distinct ones).

The product of its digits is 144, while the sum is 20.

The square root of 191144 is about 437.2001829826. The cubic root of 191144 is about 57.6041213615.

Subtracting 191144 from its reverse (441191), we obtain a cube (250047 = 63³).

It can be divided in two parts, 19 and 1144, that multiplied together give a triangular number (21736 = T₂₀₈).

The spelling of 191144 in words is "one hundred ninety-one thousand, one hundred forty-four".