1666546284 has 48 divisors (see below), whose sum is σ = 4190423552. Its totient is φ = 512453952.

The previous prime is 1666546249. The next prime is 1666546309. The reversal of 1666546284 is 4826456661.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 369507 + ... + 373989.

Almost surely, 2^1666546284 is an apocalyptic number.

It is an amenable number.

1666546284 is an abundant number, since it is smaller than the sum of its proper divisors (2523877268).

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

1666546284 is a wasteful number, since it uses less digits than its factorization.

1666546284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6886 (or 6884 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 48.

The square root of 1666546284 is about 40823.3546392258. The cubic root of 1666546284 is about 1185.6025549226.

The spelling of 1666546284 in words is "one billion, six hundred sixty-six million, five hundred forty-six thousand, two hundred eighty-four".