1129109884 has 48 divisors (see below), whose sum is σ = 2380913920. Its totient is φ = 457695360.

The previous prime is 1129109873. The next prime is 1129109921. The reversal of 1129109884 is 4889019211.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1129109884.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 430144 + ... + 432760.

Almost surely, 2^1129109884 is an apocalyptic number.

1129109884 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1129109884, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1190456960).

1129109884 is an abundant number, since it is smaller than the sum of its proper divisors (1251804036).

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

1129109884 is a wasteful number, since it uses less digits than its factorization.

1129109884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3458 (or 3456 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 43.

The square root of 1129109884 is about 33602.2303426424. The cubic root of 1129109884 is about 1041.3068765526.

The spelling of 1129109884 in words is "one billion, one hundred twenty-nine million, one hundred nine thousand, eight hundred eighty-four".