1668851206 has 32 divisors (see below), whose sum is σ = 3043681920. Its totient is φ = 676368000.

The previous prime is 1668851183. The next prime is 1668851243. The reversal of 1668851206 is 6021588661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110320 + ... + 124531.

It is an arithmetic number, because the mean of its divisors is an integer number (95115060).

Almost surely, 2^1668851206 is an apocalyptic number.

1668851206 is a deficient number, since it is larger than the sum of its proper divisors (1374830714).

1668851206 is a wasteful number, since it uses less digits than its factorization.

1668851206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234900.

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 1668851206 is about 40851.5753184623. The cubic root of 1668851206 is about 1186.1488868932.

The spelling of 1668851206 in words is "one billion, six hundred sixty-eight million, eight hundred fifty-one thousand, two hundred six".