1129788144 has 60 divisors (see below), whose sum is σ = 3164223816. Its totient is φ = 376311936.

The previous prime is 1129788097. The next prime is 1129788157. The reversal of 1129788144 is 4418879211.

It is a self number, because there is not a number n which added to its sum of digits gives 1129788144.

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, 286474 + ... + 290390.

Almost surely, 2^1129788144 is an apocalyptic number.

It is an amenable number.

1129788144 is an abundant number, since it is smaller than the sum of its proper divisors (2034435672).

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

1129788144 is a wasteful number, since it uses less digits than its factorization.

1129788144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5934 (or 5925 counting only the distinct ones).

The product of its digits is 129024, while the sum is 45.

The square root of 1129788144 is about 33612.3213122807. The cubic root of 1129788144 is about 1041.5153402986.

The spelling of 1129788144 in words is "one billion, one hundred twenty-nine million, seven hundred eighty-eight thousand, one hundred forty-four".