1228339646 has 12 divisors (see below), whose sum is σ = 1847938392. Its totient is φ = 612362916.

The previous prime is 1228339621. The next prime is 1228339657. The reversal of 1228339646 is 6469338221.

It is a junction number, because it is equal to n+sod(n) for n = 1228339597 and 1228339606.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1093241 + ... + 1094363.

It is an arithmetic number, because the mean of its divisors is an integer number (153994866).

Almost surely, 2^1228339646 is an apocalyptic number.

1228339646 is a deficient number, since it is larger than the sum of its proper divisors (619598746).

1228339646 is an frugal number, since it uses more digits than its factorization.

1228339646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2735 (or 1612 counting only the distinct ones).

The product of its digits is 373248, while the sum is 44.

The square root of 1228339646 is about 35047.6767560990. The cubic root of 1228339646 is about 1070.9589464209.

The spelling of 1228339646 in words is "one billion, two hundred twenty-eight million, three hundred thirty-nine thousand, six hundred forty-six".