1129218776 has 16 divisors (see below), whose sum is σ = 2419754640. Its totient is φ = 483950880.

The previous prime is 1129218721. The next prime is 1129218793. The reversal of 1129218776 is 6778129211.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 10082255 + ... + 10082366.

It is an arithmetic number, because the mean of its divisors is an integer number (151234665).

Almost surely, 2^1129218776 is an apocalyptic number.

It is an amenable number.

1129218776 is an abundant number, since it is smaller than the sum of its proper divisors (1290535864).

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

1129218776 is a wasteful number, since it uses less digits than its factorization.

1129218776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20164634 (or 20164630 counting only the distinct ones).

The product of its digits is 84672, while the sum is 44.

The square root of 1129218776 is about 33603.8506126902. The cubic root of 1129218776 is about 1041.3403502192.

The spelling of 1129218776 in words is "one billion, one hundred twenty-nine million, two hundred eighteen thousand, seven hundred seventy-six".