1326166666 has 16 divisors (see below), whose sum is σ = 2170664928. Its totient is φ = 602643600.

The previous prime is 1326166643. The next prime is 1326166679. The reversal of 1326166666 is 6666616231.

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, 130696 + ... + 140476.

It is an arithmetic number, because the mean of its divisors is an integer number (135666558).

Almost surely, 2^1326166666 is an apocalyptic number.

1326166666 is a deficient number, since it is larger than the sum of its proper divisors (844498262).

1326166666 is a wasteful number, since it uses less digits than its factorization.

1326166666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15957.

The product of its digits is 279936, while the sum is 43.

The square root of 1326166666 is about 36416.5713103252. The cubic root of 1326166666 is about 1098.6668880580. Note that the first 3 decimals are identical.

The spelling of 1326166666 in words is "one billion, three hundred twenty-six million, one hundred sixty-six thousand, six hundred sixty-six".