1140044191 has 32 divisors (see below), whose sum is σ = 1424098368. Its totient is φ = 896624640.

The previous prime is 1140044177. The next prime is 1140044221. The reversal of 1140044191 is 1914400411.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1140044191 - 2⁵ = 1140044159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140044131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 672541 + ... + 674233.

It is an arithmetic number, because the mean of its divisors is an integer number (44503074).

Almost surely, 2^1140044191 is an apocalyptic number.

1140044191 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1140044191 is a deficient number, since it is larger than the sum of its proper divisors (284054177).

1140044191 is a wasteful number, since it uses less digits than its factorization.

1140044191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2011.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 1140044191 is about 33764.5404381579. The cubic root of 1140044191 is about 1044.6574248525.

The spelling of 1140044191 in words is "one billion, one hundred forty million, forty-four thousand, one hundred ninety-one".