1666166010 has 32 divisors (see below), whose sum is σ = 4021151040. Its totient is φ = 441827328.

The previous prime is 1666165999. The next prime is 1666166059. The reversal of 1666166010 is 106616661.

It is a super-2 number, since 2×1666166010² = 5552218345758640200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149767 + ... + 160506.

It is an arithmetic number, because the mean of its divisors is an integer number (125660970).

Almost surely, 2^1666166010 is an apocalyptic number.

1666166010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1666166010 is an abundant number, since it is smaller than the sum of its proper divisors (2354985030).

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

1666166010 is a wasteful number, since it uses less digits than its factorization.

1666166010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310462.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 1666166010 is about 40818.6968189824. The cubic root of 1666166010 is about 1185.5123707842.

The spelling of 1666166010 in words is "one billion, six hundred sixty-six million, one hundred sixty-six thousand, ten".