1230381866 has 24 divisors (see below), whose sum is σ = 2174080320. Its totient is φ = 520628472.

The previous prime is 1230381829. The next prime is 1230381871. The reversal of 1230381866 is 6681830321.

It is a Curzon number.

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 11 ways as a sum of consecutive naturals, for example, 71720 + ... + 87203.

It is an arithmetic number, because the mean of its divisors is an integer number (90586680).

Almost surely, 2^1230381866 is an apocalyptic number.

1230381866 is a deficient number, since it is larger than the sum of its proper divisors (943698454).

1230381866 is a wasteful number, since it uses less digits than its factorization.

1230381866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159018 (or 159011 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 1230381866 is about 35076.7995404370. The cubic root of 1230381866 is about 1071.5521381618.

The spelling of 1230381866 in words is "one billion, two hundred thirty million, three hundred eighty-one thousand, eight hundred sixty-six".