1128819 has 8 divisors (see below), whose sum is σ = 1516480. Its totient is φ = 746856.

The previous prime is 1128811. The next prime is 1128821. The reversal of 1128819 is 9188211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1128819 - 2³ = 1128811 is a prime.

It is a super-2 number, since 2×1128819² = 2548464669522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1128811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 937 + ... + 1770.

It is an arithmetic number, because the mean of its divisors is an integer number (189560).

2^1128819 is an apocalyptic number.

1128819 is a deficient number, since it is larger than the sum of its proper divisors (387661).

1128819 is a wasteful number, since it uses less digits than its factorization.

1128819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2849.

The product of its digits is 1152, while the sum is 30.

The square root of 1128819 is about 1062.4589403831. The cubic root of 1128819 is about 104.1217447546.

The spelling of 1128819 in words is "one million, one hundred twenty-eight thousand, eight hundred nineteen".