1129693986 has 16 divisors (see below), whose sum is σ = 2510431200. Its totient is φ = 376564644.

The previous prime is 1129693949. The next prime is 1129693991. The reversal of 1129693986 is 6893969211.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 20920259 = 1129693986 / (1 + 1 + 2 + 9 + 6 + 9 + 3 + 9 + 8 + 6).

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 7 ways as a sum of consecutive naturals, for example, 10460076 + ... + 10460183.

It is an arithmetic number, because the mean of its divisors is an integer number (156901950).

Almost surely, 2^1129693986 is an apocalyptic number.

1129693986 is an abundant number, since it is smaller than the sum of its proper divisors (1380737214).

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

1129693986 is a wasteful number, since it uses less digits than its factorization.

1129693986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20920270 (or 20920264 counting only the distinct ones).

The product of its digits is 1259712, while the sum is 54.

The square root of 1129693986 is about 33610.9206360076. The cubic root of 1129693986 is about 1041.4864057512.

The spelling of 1129693986 in words is "one billion, one hundred twenty-nine million, six hundred ninety-three thousand, nine hundred eighty-six".