1228713806 has 8 divisors (see below), whose sum is σ = 1843602984. Its totient is φ = 614179480.

The previous prime is 1228713803. The next prime is 1228713821. The reversal of 1228713806 is 6083178221.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1228713806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228713803) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 79880 + ... + 94011.

It is an arithmetic number, because the mean of its divisors is an integer number (230450373).

Almost surely, 2^1228713806 is an apocalyptic number.

1228713806 is a deficient number, since it is larger than the sum of its proper divisors (614889178).

1228713806 is a wasteful number, since it uses less digits than its factorization.

1228713806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177426.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 1228713806 is about 35053.0142213191. The cubic root of 1228713806 is about 1071.0676756641.

The spelling of 1228713806 in words is "one billion, two hundred twenty-eight million, seven hundred thirteen thousand, eight hundred six".