1219276868 has 24 divisors (see below), whose sum is σ = 2186960160. Its totient is φ = 594478080.

The previous prime is 1219276843. The next prime is 1219276871. The reversal of 1219276868 is 8686729121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104723 + ... + 115781.

It is an arithmetic number, because the mean of its divisors is an integer number (91123340).

Almost surely, 2^1219276868 is an apocalyptic number.

It is an amenable number.

1219276868 is a deficient number, since it is larger than the sum of its proper divisors (967683292).

1219276868 is a wasteful number, since it uses less digits than its factorization.

1219276868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11747 (or 11745 counting only the distinct ones).

The product of its digits is 580608, while the sum is 50.

The square root of 1219276868 is about 34918.1452542944. The cubic root of 1219276868 is about 1068.3185714722.

The spelling of 1219276868 in words is "one billion, two hundred nineteen million, two hundred seventy-six thousand, eight hundred sixty-eight".