1664108266 has 8 divisors (see below), whose sum is σ = 2496905280. Its totient is φ = 831806508.

The previous prime is 1664108261. The next prime is 1664108269. The reversal of 1664108266 is 6628014661.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1664108261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115296 + ... + 128923.

It is an arithmetic number, because the mean of its divisors is an integer number (312113160).

Almost surely, 2^1664108266 is an apocalyptic number.

1664108266 is a deficient number, since it is larger than the sum of its proper divisors (832797014).

1664108266 is a wasteful number, since it uses less digits than its factorization.

1664108266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247628.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 1664108266 is about 40793.4831315003. The cubic root of 1664108266 is about 1185.0241269337.

The spelling of 1664108266 in words is "one billion, six hundred sixty-four million, one hundred eight thousand, two hundred sixty-six".