1228573866 has 16 divisors (see below), whose sum is σ = 2646159264. Its totient is φ = 378022704.

The previous prime is 1228573861. The next prime is 1228573873. The reversal of 1228573866 is 6683758221.

It is not an unprimeable number, because it can be changed into a prime (1228573861) 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, 7875396 + ... + 7875551.

It is an arithmetic number, because the mean of its divisors is an integer number (165384954).

Almost surely, 2^1228573866 is an apocalyptic number.

1228573866 is an abundant number, since it is smaller than the sum of its proper divisors (1417585398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1228573866 is a wasteful number, since it uses less digits than its factorization.

1228573866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15750965.

The product of its digits is 967680, while the sum is 48.

The square root of 1228573866 is about 35051.0180451296. The cubic root of 1228573866 is about 1071.0270123025.

The spelling of 1228573866 in words is "one billion, two hundred twenty-eight million, five hundred seventy-three thousand, eight hundred sixty-six".