1139231823 has 16 divisors (see below), whose sum is σ = 1540479072. Its totient is φ = 748800000.

The previous prime is 1139231789. The next prime is 1139231843. The reversal of 1139231823 is 3281329311.

It is not a de Polignac number, because 1139231823 - 2⁸ = 1139231567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139231843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65223 + ... + 80823.

It is an arithmetic number, because the mean of its divisors is an integer number (96279942).

Almost surely, 2^1139231823 is an apocalyptic number.

1139231823 is a deficient number, since it is larger than the sum of its proper divisors (401247249).

1139231823 is a wasteful number, since it uses less digits than its factorization.

1139231823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15946.

The product of its digits is 7776, while the sum is 33.

The square root of 1139231823 is about 33752.5083956734. The cubic root of 1139231823 is about 1044.4092333279.

The spelling of 1139231823 in words is "one billion, one hundred thirty-nine million, two hundred thirty-one thousand, eight hundred twenty-three".