1129263885 has 24 divisors (see below), whose sum is σ = 1972342944. Its totient is φ = 597673440.

The previous prime is 1129263869. The next prime is 1129263929. The reversal of 1129263885 is 5883629211.

1129263885 is a `hidden beast` number, since 1 + 1 + 2 + 9 + 2 + 638 + 8 + 5 = 666.

It is not a de Polignac number, because 1129263885 - 2⁴ = 1129263869 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1129263885.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89887 + ... + 101676.

It is an arithmetic number, because the mean of its divisors is an integer number (82180956).

Almost surely, 2^1129263885 is an apocalyptic number.

1129263885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1129263885 is a deficient number, since it is larger than the sum of its proper divisors (843079059).

1129263885 is a wasteful number, since it uses less digits than its factorization.

1129263885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191705 (or 191702 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 1129263885 is about 33604.5217939491. The cubic root of 1129263885 is about 1041.3542162055.

The spelling of 1129263885 in words is "one billion, one hundred twenty-nine million, two hundred sixty-three thousand, eight hundred eighty-five".