1228686773 has 8 divisors (see below), whose sum is σ = 1267166208. Its totient is φ = 1190657664.

The previous prime is 1228686743. The next prime is 1228686791. The reversal of 1228686773 is 3776868221.

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

It is a cyclic number.

It is not a de Polignac number, because 1228686773 - 2⁶ = 1228686709 is a prime.

It is a super-2 number, since 2×1228686773² = 3019342372290307058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228686733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107036 + ... + 117957.

It is an arithmetic number, because the mean of its divisors is an integer number (158395776).

Almost surely, 2^1228686773 is an apocalyptic number.

It is an amenable number.

1228686773 is a deficient number, since it is larger than the sum of its proper divisors (38479435).

1228686773 is a wasteful number, since it uses less digits than its factorization.

1228686773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225163.

The product of its digits is 1354752, while the sum is 50.

The square root of 1228686773 is about 35052.6286175516. The cubic root of 1228686773 is about 1071.0598207335.

The spelling of 1228686773 in words is "one billion, two hundred twenty-eight million, six hundred eighty-six thousand, seven hundred seventy-three".