1147128843 has 16 divisors (see below), whose sum is σ = 1808282880. Its totient is φ = 632898336.

The previous prime is 1147128823. The next prime is 1147128847. The reversal of 1147128843 is 3488217411.

It is not a de Polignac number, because 1147128843 - 2¹³ = 1147120651 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1147128847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 941205 + ... + 942422.

It is an arithmetic number, because the mean of its divisors is an integer number (113017680).

Almost surely, 2^1147128843 is an apocalyptic number.

1147128843 is a deficient number, since it is larger than the sum of its proper divisors (661154037).

1147128843 is a wasteful number, since it uses less digits than its factorization.

1147128843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1883666.

The product of its digits is 43008, while the sum is 39.

The square root of 1147128843 is about 33869.2905594434. The cubic root of 1147128843 is about 1046.8169189525.

The spelling of 1147128843 in words is "one billion, one hundred forty-seven million, one hundred twenty-eight thousand, eight hundred forty-three".