1128422811 has 4 divisors (see below), whose sum is σ = 1504563752. Its totient is φ = 752281872.

The previous prime is 1128422797. The next prime is 1128422819. The reversal of 1128422811 is 1182248211.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1128422811 - 2¹¹ = 1128420763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1128422819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188070466 + ... + 188070471.

It is an arithmetic number, because the mean of its divisors is an integer number (376140938).

Almost surely, 2^1128422811 is an apocalyptic number.

1128422811 is a deficient number, since it is larger than the sum of its proper divisors (376140941).

1128422811 is an equidigital number, since it uses as much as digits as its factorization.

1128422811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376140940.

The product of its digits is 2048, while the sum is 30.

The square root of 1128422811 is about 33592.0051649198. The cubic root of 1128422811 is about 1041.0956189892.

The spelling of 1128422811 in words is "one billion, one hundred twenty-eight million, four hundred twenty-two thousand, eight hundred eleven".