1129476384 has 72 divisors (see below), whose sum is σ = 3225474252. Its totient is φ = 374906880.

The previous prime is 1129476373. The next prime is 1129476401. The reversal of 1129476384 is 4836749211.

1129476384 is a `hidden beast` number, since 1 + 1 + 2 + 9 + 4 + 7 + 638 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 932691600 + 196784784 = 30540^2 + 14028^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61272 + ... + 77544.

Almost surely, 2^1129476384 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 1129476384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1612737126).

1129476384 is an abundant number, since it is smaller than the sum of its proper divisors (2095997868).

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

1129476384 is a wasteful number, since it uses less digits than its factorization.

1129476384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16530 (or 16519 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 1129476384 is about 33607.6834072210. The cubic root of 1129476384 is about 1041.4195309809.

It can be divided in two parts, 11294 and 76384, that added together give a palindrome (87678).

The spelling of 1129476384 in words is "one billion, one hundred twenty-nine million, four hundred seventy-six thousand, three hundred eighty-four".