1223952866 has 8 divisors (see below), whose sum is σ = 1915752384. Its totient is φ = 585368740.

The previous prime is 1223952857. The next prime is 1223952911. The reversal of 1223952866 is 6682593221.

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

It is a super-2 number, since 2×1223952866² = 2996121236379227912, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13303790 + ... + 13303881.

It is an arithmetic number, because the mean of its divisors is an integer number (239469048).

Almost surely, 2^1223952866 is an apocalyptic number.

1223952866 is a deficient number, since it is larger than the sum of its proper divisors (691799518).

1223952866 is a wasteful number, since it uses less digits than its factorization.

1223952866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26607696.

The product of its digits is 311040, while the sum is 44.

The square root of 1223952866 is about 34985.0377447274. The cubic root of 1223952866 is about 1069.6825173900.

The spelling of 1223952866 in words is "one billion, two hundred twenty-three million, nine hundred fifty-two thousand, eight hundred sixty-six".