1668377366 has 16 divisors (see below), whose sum is σ = 2598099840. Its totient is φ = 802549440.

The previous prime is 1668377341. The next prime is 1668377387. The reversal of 1668377366 is 6637738661.

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, 34886 + ... + 67481.

It is an arithmetic number, because the mean of its divisors is an integer number (162381240).

Almost surely, 2^1668377366 is an apocalyptic number.

1668377366 is a deficient number, since it is larger than the sum of its proper divisors (929722474).

1668377366 is a wasteful number, since it uses less digits than its factorization.

1668377366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102679.

The product of its digits is 4572288, while the sum is 53.

The square root of 1668377366 is about 40845.7753751842. The cubic root of 1668377366 is about 1186.0366144532.

It can be divided in two parts, 16683 and 77366, that added together give a palindrome (94049).

The spelling of 1668377366 in words is "one billion, six hundred sixty-eight million, three hundred seventy-seven thousand, three hundred sixty-six".