1139023158 has 96 divisors (see below), whose sum is σ = 2942148096. Its totient is φ = 287299584.

The previous prime is 1139023147. The next prime is 1139023183. The reversal of 1139023158 is 8513209311.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 159766 + ... + 166742.

It is an arithmetic number, because the mean of its divisors is an integer number (30647376).

Almost surely, 2^1139023158 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1139023158, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1471074048).

1139023158 is an abundant number, since it is smaller than the sum of its proper divisors (1803124938).

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

1139023158 is a wasteful number, since it uses less digits than its factorization.

1139023158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7038 (or 7025 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 1139023158 is about 33749.4171505228. The cubic root of 1139023158 is about 1044.3454637610.

The spelling of 1139023158 in words is "one billion, one hundred thirty-nine million, twenty-three thousand, one hundred fifty-eight".