1228166516 has 24 divisors (see below), whose sum is σ = 2201633280. Its totient is φ = 599159232.

The previous prime is 1228166477. The next prime is 1228166531. The reversal of 1228166516 is 6156618221.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1228166516.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183680 + ... + 190248.

It is an arithmetic number, because the mean of its divisors is an integer number (91734720).

Almost surely, 2^1228166516 is an apocalyptic number.

It is an amenable number.

1228166516 is a deficient number, since it is larger than the sum of its proper divisors (973466764).

1228166516 is a wasteful number, since it uses less digits than its factorization.

1228166516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7703 (or 7701 counting only the distinct ones).

The product of its digits is 34560, while the sum is 38.

The square root of 1228166516 is about 35045.2067478564. The cubic root of 1228166516 is about 1070.9086281356.

The spelling of 1228166516 in words is "one billion, two hundred twenty-eight million, one hundred sixty-six thousand, five hundred sixteen".