1666666234 has 8 divisors (see below), whose sum is σ = 2511013248. Its totient is φ = 829661820.

The previous prime is 1666666207. The next prime is 1666666259. The reversal of 1666666234 is 4326666661.

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

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 3 ways as a sum of consecutive naturals, for example, 1835082 + ... + 1835989.

It is an arithmetic number, because the mean of its divisors is an integer number (313876656).

Almost surely, 2^1666666234 is an apocalyptic number.

1666666234 is a deficient number, since it is larger than the sum of its proper divisors (844347014).

1666666234 is a wasteful number, since it uses less digits than its factorization.

1666666234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3671300.

The product of its digits is 1119744, while the sum is 46.

The square root of 1666666234 is about 40824.8237473231. The cubic root of 1666666234 is about 1185.6309989001.

The spelling of 1666666234 in words is "one billion, six hundred sixty-six million, six hundred sixty-six thousand, two hundred thirty-four".