1128422679 has 4 divisors (see below), whose sum is σ = 1504563576. Its totient is φ = 752281784.

The previous prime is 1128422677. The next prime is 1128422689. The reversal of 1128422679 is 9762248211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9762248211 = 3 ⋅3254082737.

It is a cyclic number.

It is not a de Polignac number, because 1128422679 - 2¹ = 1128422677 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1128422679.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128422677) 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, 188070444 + ... + 188070449.

It is an arithmetic number, because the mean of its divisors is an integer number (376140894).

Almost surely, 2^1128422679 is an apocalyptic number.

1128422679 is a deficient number, since it is larger than the sum of its proper divisors (376140897).

1128422679 is an equidigital number, since it uses as much as digits as its factorization.

1128422679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376140896.

The product of its digits is 96768, while the sum is 42.

The square root of 1128422679 is about 33592.0032001666. The cubic root of 1128422679 is about 1041.0955783943.

The spelling of 1128422679 in words is "one billion, one hundred twenty-eight million, four hundred twenty-two thousand, six hundred seventy-nine".