1666942246 has 8 divisors (see below), whose sum is σ = 2500591680. Its totient is φ = 833411688.

The previous prime is 1666942231. The next prime is 1666942313. The reversal of 1666942246 is 6422496661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1666942196 and 1666942205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26955 + ... + 63721.

It is an arithmetic number, because the mean of its divisors is an integer number (312573960).

Almost surely, 2^1666942246 is an apocalyptic number.

1666942246 is a deficient number, since it is larger than the sum of its proper divisors (833649434).

1666942246 is a wasteful number, since it uses less digits than its factorization.

1666942246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59438.

The product of its digits is 746496, while the sum is 46.

The square root of 1666942246 is about 40828.2040506315. The cubic root of 1666942246 is about 1185.6964449811.

The spelling of 1666942246 in words is "one billion, six hundred sixty-six million, nine hundred forty-two thousand, two hundred forty-six".