1666835196 has 96 divisors (see below), whose sum is σ = 4305665280. Its totient is φ = 498714624.

The previous prime is 1666835189. The next prime is 1666835201. The reversal of 1666835196 is 6915386661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 891855 + ... + 893721.

It is an arithmetic number, because the mean of its divisors is an integer number (44850680).

Almost surely, 2^1666835196 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1666835196, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2152832640).

1666835196 is an abundant number, since it is smaller than the sum of its proper divisors (2638830084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1666835196 is a wasteful number, since it uses less digits than its factorization.

1666835196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2043 (or 2041 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 51.

The square root of 1666835196 is about 40826.8930485777. The cubic root of 1666835196 is about 1185.6710628736.

The spelling of 1666835196 in words is "one billion, six hundred sixty-six million, eight hundred thirty-five thousand, one hundred ninety-six".