3981770668 has 12 divisors (see below), whose sum is σ = 7377986952. Its totient is φ = 1873774400.

The previous prime is 3981770633. The next prime is 3981770677. The reversal of 3981770668 is 8660771893.

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, 29277658 + ... + 29277793.

It is an arithmetic number, because the mean of its divisors is an integer number (614832246).

Almost surely, 2^3981770668 is an apocalyptic number.

It is an amenable number.

3981770668 is a deficient number, since it is larger than the sum of its proper divisors (3396216284).

3981770668 is a wasteful number, since it uses less digits than its factorization.

3981770668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58555472 (or 58555470 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 55.

The square root of 3981770668 is about 63101.2731091854. The cubic root of 3981770668 is about 1584.9859410231.

The spelling of 3981770668 in words is "three billion, nine hundred eighty-one million, seven hundred seventy thousand, six hundred sixty-eight".