1666303072 has 48 divisors (see below), whose sum is σ = 3870139392. Its totient is φ = 691090560.

The previous prime is 1666303033. The next prime is 1666303087. The reversal of 1666303072 is 2703036661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113038 + ... + 126925.

It is an arithmetic number, because the mean of its divisors is an integer number (80627904).

Almost surely, 2^1666303072 is an apocalyptic number.

It is an amenable number.

1666303072 is an abundant number, since it is smaller than the sum of its proper divisors (2203836320).

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

1666303072 is a wasteful number, since it uses less digits than its factorization.

1666303072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240011 (or 240003 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 34.

The square root of 1666303072 is about 40820.3756964583. The cubic root of 1666303072 is about 1185.5448773972.

The spelling of 1666303072 in words is "one billion, six hundred sixty-six million, three hundred three thousand, seventy-two".