1129962805 has 4 divisors (see below), whose sum is σ = 1355955372. Its totient is φ = 903970240.

The previous prime is 1129962793. The next prime is 1129962811. The reversal of 1129962805 is 5082699211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5082699211 = 8941 ⋅568471.

It can be written as a sum of positive squares in 2 ways, for example, as 209265156 + 920697649 = 14466^2 + 30343^2 .

It is not a de Polignac number, because 1129962805 - 2⁵ = 1129962773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112996276 + ... + 112996285.

It is an arithmetic number, because the mean of its divisors is an integer number (338988843).

Almost surely, 2^1129962805 is an apocalyptic number.

It is an amenable number.

1129962805 is a deficient number, since it is larger than the sum of its proper divisors (225992567).

1129962805 is an equidigital number, since it uses as much as digits as its factorization.

1129962805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225992566.

The product of its (nonzero) digits is 77760, while the sum is 43.

The square root of 1129962805 is about 33614.9193811319. The cubic root of 1129962805 is about 1041.5690089852.

The spelling of 1129962805 in words is "one billion, one hundred twenty-nine million, nine hundred sixty-two thousand, eight hundred five".