1806938228 has 24 divisors (see below), whose sum is σ = 3524371200. Its totient is φ = 805569408.

The previous prime is 1806938219. The next prime is 1806938249. The reversal of 1806938228 is 8228396081.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 697988 + ... + 700571.

It is an arithmetic number, because the mean of its divisors is an integer number (146848800).

Almost surely, 2^1806938228 is an apocalyptic number.

It is an amenable number.

1806938228 is a deficient number, since it is larger than the sum of its proper divisors (1717432972).

1806938228 is a wasteful number, since it uses less digits than its factorization.

1806938228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1398599 (or 1398597 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 47.

The square root of 1806938228 is about 42508.0960288743. The cubic root of 1806938228 is about 1218.0013472411.

The spelling of 1806938228 in words is "one billion, eight hundred six million, nine hundred thirty-eight thousand, two hundred twenty-eight".