3964791664 has 20 divisors (see below), whose sum is σ = 7742274304. Its totient is φ = 1966785408.

The previous prime is 3964791653. The next prime is 3964791667. The reversal of 3964791664 is 4661974693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3964791667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 973557 + ... + 977620.

Almost surely, 2^3964791664 is an apocalyptic number.

It is an amenable number.

3964791664 is a deficient number, since it is larger than the sum of its proper divisors (3777482640).

3964791664 is a wasteful number, since it uses less digits than its factorization.

3964791664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1951312 (or 1951306 counting only the distinct ones).

The product of its digits is 5878656, while the sum is 55.

The square root of 3964791664 is about 62966.5916498583. The cubic root of 3964791664 is about 1582.7298404423.

The spelling of 3964791664 in words is "three billion, nine hundred sixty-four million, seven hundred ninety-one thousand, six hundred sixty-four".