1012439158 has 16 divisors (see below), whose sum is σ = 1558136160. Its totient is φ = 493099200.

The previous prime is 1012439123. The next prime is 1012439159. The reversal of 1012439158 is 8519342101.

1012439158 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012439159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44863 + ... + 63541.

It is an arithmetic number, because the mean of its divisors is an integer number (97383510).

Almost surely, 2^1012439158 is an apocalyptic number.

1012439158 is a deficient number, since it is larger than the sum of its proper divisors (545697002).

1012439158 is a wasteful number, since it uses less digits than its factorization.

1012439158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19383.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 1012439158 is about 31818.8490992368. The cubic root of 1012439158 is about 1004.1293113181.

The spelling of 1012439158 in words is "one billion, twelve million, four hundred thirty-nine thousand, one hundred fifty-eight".