1666093864 has 16 divisors (see below), whose sum is σ = 3124552320. Its totient is φ = 832879920.

The previous prime is 1666093843. The next prime is 1666093901. The reversal of 1666093864 is 4683906661.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28347 + ... + 64309.

It is an arithmetic number, because the mean of its divisors is an integer number (195284520).

Almost surely, 2^1666093864 is an apocalyptic number.

It is an amenable number.

1666093864 is a deficient number, since it is larger than the sum of its proper divisors (1458458456).

1666093864 is a wasteful number, since it uses less digits than its factorization.

1666093864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41760 (or 41756 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 49.

The square root of 1666093864 is about 40817.8130722360. The cubic root of 1666093864 is about 1185.4952594020.

The spelling of 1666093864 in words is "one billion, six hundred sixty-six million, ninety-three thousand, eight hundred sixty-four".