1228044885 has 16 divisors (see below), whose sum is σ = 1983237696. Its totient is φ = 648835328.

The previous prime is 1228044871. The next prime is 1228044887. The reversal of 1228044885 is 5884408221.

It is a cyclic number.

It is not a de Polignac number, because 1228044885 - 2⁹ = 1228044373 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228044887) 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, 380964 + ... + 384173.

It is an arithmetic number, because the mean of its divisors is an integer number (123952356).

Almost surely, 2^1228044885 is an apocalyptic number.

1228044885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1228044885 is a deficient number, since it is larger than the sum of its proper divisors (755192811).

1228044885 is a wasteful number, since it uses less digits than its factorization.

1228044885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765252.

The product of its (nonzero) digits is 163840, while the sum is 42.

The square root of 1228044885 is about 35043.4713605830. The cubic root of 1228044885 is about 1070.8732746268.

The spelling of 1228044885 in words is "one billion, two hundred twenty-eight million, forty-four thousand, eight hundred eighty-five".