1666362166 has 8 divisors (see below), whose sum is σ = 2856620880. Its totient is φ = 714155208.

The previous prime is 1666362157. The next prime is 1666362169. The reversal of 1666362166 is 6612636661.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1666362169) 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, 59512921 + ... + 59512948.

It is an arithmetic number, because the mean of its divisors is an integer number (357077610).

Almost surely, 2^1666362166 is an apocalyptic number.

1666362166 is a deficient number, since it is larger than the sum of its proper divisors (1190258714).

1666362166 is a wasteful number, since it uses less digits than its factorization.

1666362166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119025878.

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

The square root of 1666362166 is about 40821.0995197337. The cubic root of 1666362166 is about 1185.5588920068.

The spelling of 1666362166 in words is "one billion, six hundred sixty-six million, three hundred sixty-two thousand, one hundred sixty-six".