3951649766 has 8 divisors (see below), whose sum is σ = 5966729904. Its totient is φ = 1962739800.

The previous prime is 3951649759. The next prime is 3951649777. The reversal of 3951649766 is 6679461593.

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

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, 6542165 + ... + 6542768.

It is an arithmetic number, because the mean of its divisors is an integer number (745841238).

Almost surely, 2^3951649766 is an apocalyptic number.

3951649766 is a deficient number, since it is larger than the sum of its proper divisors (2015080138).

3951649766 is a wasteful number, since it uses less digits than its factorization.

3951649766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13085086.

The product of its digits is 7348320, while the sum is 56.

The square root of 3951649766 is about 62862.1489133167. The cubic root of 3951649766 is about 1580.9791727351.

The spelling of 3951649766 in words is "three billion, nine hundred fifty-one million, six hundred forty-nine thousand, seven hundred sixty-six".