1129498805 has 8 divisors (see below), whose sum is σ = 1355682744. Its totient is φ = 903409600.

The previous prime is 1129498793. The next prime is 1129498813. The reversal of 1129498805 is 5088949211.

It can be written as a sum of positive squares in 4 ways, for example, as 8655364 + 1120843441 = 2942^2 + 33479^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1129498805 - 2¹⁴ = 1129482421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1129498805.

It is a congruent number.

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, 5915 + ... + 47895.

It is an arithmetic number, because the mean of its divisors is an integer number (169460343).

Almost surely, 2^1129498805 is an apocalyptic number.

It is an amenable number.

1129498805 is a deficient number, since it is larger than the sum of its proper divisors (226183939).

1129498805 is an equidigital number, since it uses as much as digits as its factorization.

1129498805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47367.

The product of its (nonzero) digits is 207360, while the sum is 47.

The square root of 1129498805 is about 33608.0169751207. The cubic root of 1129498805 is about 1041.4264219359.

The spelling of 1129498805 in words is "one billion, one hundred twenty-nine million, four hundred ninety-eight thousand, eight hundred five".