3920642965 has 8 divisors (see below), whose sum is σ = 4867005240. Its totient is φ = 3028358592.

The previous prime is 3920642963. The next prime is 3920642987. The reversal of 3920642965 is 5692460293.

It can be written as a sum of positive squares in 4 ways, for example, as 1314642564 + 2606000401 = 36258^2 + 51049^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 3920642965 - 2¹ = 3920642963 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3920642963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13519314 + ... + 13519603.

It is an arithmetic number, because the mean of its divisors is an integer number (608375655).

Almost surely, 2^3920642965 is an apocalyptic number.

It is an amenable number.

3920642965 is a deficient number, since it is larger than the sum of its proper divisors (946362275).

3920642965 is a wasteful number, since it uses less digits than its factorization.

3920642965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27038951.

The product of its (nonzero) digits is 699840, while the sum is 46.

The square root of 3920642965 is about 62615.0378503439. The cubic root of 3920642965 is about 1576.8332348092.

The spelling of 3920642965 in words is "three billion, nine hundred twenty million, six hundred forty-two thousand, nine hundred sixty-five".