1666165300 has 36 divisors (see below), whose sum is σ = 3661362880. Its totient is φ = 658026720.

The previous prime is 1666165261. The next prime is 1666165301. The reversal of 1666165300 is 35616661.

It is a super-2 number, since 2×1666165300² = 5552213613848180000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1666165301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97554 + ... + 113353.

Almost surely, 2^1666165300 is an apocalyptic number.

1666165300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1666165300 is an abundant number, since it is smaller than the sum of its proper divisors (1995197580).

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

1666165300 is a wasteful number, since it uses less digits than its factorization.

1666165300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211000 (or 210993 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 1666165300 is about 40818.6881219865. The cubic root of 1666165300 is about 1185.5122023908.

The spelling of 1666165300 in words is "one billion, six hundred sixty-six million, one hundred sixty-five thousand, three hundred".