1129449216 has 108 divisors (see below), whose sum is σ = 3496871112. Its totient is φ = 322689024.

The previous prime is 1129449199. The next prime is 1129449289. The reversal of 1129449216 is 6129449211.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22626 + ... + 52638.

Almost surely, 2^1129449216 is an apocalyptic number.

1129449216 is a gapful number since it is divisible by the number (16) 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 1129449216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1748435556).

1129449216 is an abundant number, since it is smaller than the sum of its proper divisors (2367421896).

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

1129449216 is an equidigital number, since it uses as much as digits as its factorization.

1129449216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30046 (or 30025 counting only the distinct ones).

The product of its digits is 31104, while the sum is 39.

The square root of 1129449216 is about 33607.2792115042. The cubic root of 1129449216 is about 1041.4111809427.

The spelling of 1129449216 in words is "one billion, one hundred twenty-nine million, four hundred forty-nine thousand, two hundred sixteen".