1128843953 has 4 divisors (see below), whose sum is σ = 1128913140. Its totient is φ = 1128774768.

The previous prime is 1128843943. The next prime is 1128843983. The reversal of 1128843953 is 3593488211.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 691532209 + 437311744 = 26297^2 + 20912^2 .

It is a cyclic number.

It is not a de Polignac number, because 1128843953 - 2¹² = 1128839857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1128843913) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 4943 + ... + 47771.

It is an arithmetic number, because the mean of its divisors is an integer number (282228285).

Almost surely, 2^1128843953 is an apocalyptic number.

It is an amenable number.

1128843953 is a deficient number, since it is larger than the sum of its proper divisors (69187).

1128843953 is an equidigital number, since it uses as much as digits as its factorization.

1128843953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69186.

The product of its digits is 207360, while the sum is 44.

The square root of 1128843953 is about 33598.2730657396. The cubic root of 1128843953 is about 1041.2251196673.

The spelling of 1128843953 in words is "one billion, one hundred twenty-eight million, eight hundred forty-three thousand, nine hundred fifty-three".