1129268844 has 96 divisors (see below), whose sum is σ = 3246458880. Its totient is φ = 336571200.

The previous prime is 1129268821. The next prime is 1129268849. The reversal of 1129268844 is 4488629211.

It is a self number, because there is not a number n which added to its sum of digits gives 1129268844.

It is not an unprimeable number, because it can be changed into a prime (1129268849) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64677 + ... + 80259.

It is an arithmetic number, because the mean of its divisors is an integer number (33817280).

Almost surely, 2^1129268844 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1129268844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1623229440).

1129268844 is an abundant number, since it is smaller than the sum of its proper divisors (2117190036).

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

1129268844 is a wasteful number, since it uses less digits than its factorization.

1129268844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15668 (or 15660 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 1129268844 is about 33604.5955785812. The cubic root of 1129268844 is about 1041.3557405224.

The spelling of 1129268844 in words is "one billion, one hundred twenty-nine million, two hundred sixty-eight thousand, eight hundred forty-four".