1129813158 has 16 divisors (see below), whose sum is σ = 2259961776. Its totient is φ = 376548480.

The previous prime is 1129813151. The next prime is 1129813159. The reversal of 1129813158 is 8513189211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1129813151) 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, 59610 + ... + 76242.

It is an arithmetic number, because the mean of its divisors is an integer number (141247611).

Almost surely, 2^1129813158 is an apocalyptic number.

1129813158 is an abundant number, since it is smaller than the sum of its proper divisors (1130148618).

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

1129813158 is a wasteful number, since it uses less digits than its factorization.

1129813158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27959.

The product of its digits is 17280, while the sum is 39.

The square root of 1129813158 is about 33612.6934059144. The cubic root of 1129813158 is about 1041.5230267758.

The spelling of 1129813158 in words is "one billion, one hundred twenty-nine million, eight hundred thirteen thousand, one hundred fifty-eight".