3920816633 has 4 divisors (see below), whose sum is σ = 3924657828. Its totient is φ = 3916975440.

The previous prime is 3920816597. The next prime is 3920816677. The reversal of 3920816633 is 3366180293.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2964584704 + 956231929 = 54448^2 + 30923^2 .

It is a cyclic number.

It is not a de Polignac number, because 3920816633 - 2¹⁴ = 3920800249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3920818633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1919066 + ... + 1921107.

It is an arithmetic number, because the mean of its divisors is an integer number (981164457).

Almost surely, 2^3920816633 is an apocalyptic number.

It is an amenable number.

3920816633 is a deficient number, since it is larger than the sum of its proper divisors (3841195).

3920816633 is a wasteful number, since it uses less digits than its factorization.

3920816633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3841194.

The product of its (nonzero) digits is 139968, while the sum is 41.

The square root of 3920816633 is about 62616.4246264508. The cubic root of 3920816633 is about 1576.8565168264.

The spelling of 3920816633 in words is "three billion, nine hundred twenty million, eight hundred sixteen thousand, six hundred thirty-three".