1129855824 has 80 divisors (see below), whose sum is σ = 3413819200. Its totient is φ = 356793984.

The previous prime is 1129855823. The next prime is 1129855849. The reversal of 1129855824 is 4285589211.

1129855824 is a `hidden beast` number, since 1 + 1 + 2 + 98 + 558 + 2 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1129855824.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1129855823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60619 + ... + 77034.

It is an arithmetic number, because the mean of its divisors is an integer number (42672740).

Almost surely, 2^1129855824 is an apocalyptic number.

It is an amenable number.

1129855824 is an abundant number, since it is smaller than the sum of its proper divisors (2283963376).

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

1129855824 is a wasteful number, since it uses less digits than its factorization.

1129855824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137689 (or 137677 counting only the distinct ones).

The product of its digits is 230400, while the sum is 45.

The square root of 1129855824 is about 33613.3280708709. The cubic root of 1129855824 is about 1041.5361372215.

The spelling of 1129855824 in words is "one billion, one hundred twenty-nine million, eight hundred fifty-five thousand, eight hundred twenty-four".