1128622805 has 4 divisors (see below), whose sum is σ = 1354347372. Its totient is φ = 902898240.

The previous prime is 1128622787. The next prime is 1128622829. The reversal of 1128622805 is 5082268211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5082268211 = 79 ⋅64332509.

It can be written as a sum of positive squares in 2 ways, for example, as 235868164 + 892754641 = 15358^2 + 29879^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1128622805 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112862276 + ... + 112862285.

It is an arithmetic number, because the mean of its divisors is an integer number (338586843).

Almost surely, 2^1128622805 is an apocalyptic number.

It is an amenable number.

1128622805 is a deficient number, since it is larger than the sum of its proper divisors (225724567).

1128622805 is an equidigital number, since it uses as much as digits as its factorization.

1128622805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225724566.

The product of its (nonzero) digits is 15360, while the sum is 35.

The square root of 1128622805 is about 33594.9818425312. The cubic root of 1128622805 is about 1041.1571209297.

The spelling of 1128622805 in words is "one billion, one hundred twenty-eight million, six hundred twenty-two thousand, eight hundred five".