1579481666 has 16 divisors (see below), whose sum is σ = 2850192960. Its totient is φ = 641293200.

The previous prime is 1579481627. The next prime is 1579481689. The reversal of 1579481666 is 6661849751.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 2968685 + ... + 2969216.

It is an arithmetic number, because the mean of its divisors is an integer number (178137060).

Almost surely, 2^1579481666 is an apocalyptic number.

1579481666 is a deficient number, since it is larger than the sum of its proper divisors (1270711294).

1579481666 is a wasteful number, since it uses less digits than its factorization.

1579481666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5937929.

The product of its digits is 2177280, while the sum is 53.

The square root of 1579481666 is about 39742.6932403933. The cubic root of 1579481666 is about 1164.5859054980.

The spelling of 1579481666 in words is "one billion, five hundred seventy-nine million, four hundred eighty-one thousand, six hundred sixty-six".