1129785770 has 16 divisors (see below), whose sum is σ = 2103739560. Its totient is φ = 436330944.

The previous prime is 1129785757. The next prime is 1129785841. The reversal of 1129785770 is 775879211.

It can be written as a sum of positive squares in 4 ways, for example, as 680218561 + 449567209 = 26081^2 + 21203^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1947617 + ... + 1948196.

Almost surely, 2^1129785770 is an apocalyptic number.

1129785770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1129785770 is a deficient number, since it is larger than the sum of its proper divisors (973953790).

1129785770 is a wasteful number, since it uses less digits than its factorization.

1129785770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3895849.

The product of its (nonzero) digits is 246960, while the sum is 47.

The square root of 1129785770 is about 33612.2859978312. The cubic root of 1129785770 is about 1041.5146107934.

The spelling of 1129785770 in words is "one billion, one hundred twenty-nine million, seven hundred eighty-five thousand, seven hundred seventy".