3961508563 has 4 divisors (see below), whose sum is σ = 4068576400. Its totient is φ = 3854440728.

The previous prime is 3961508561. The next prime is 3961508609. The reversal of 3961508563 is 3658051693.

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

It is a cyclic number.

It is not a de Polignac number, because 3961508563 - 2¹ = 3961508561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3961508561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53533863 + ... + 53533936.

It is an arithmetic number, because the mean of its divisors is an integer number (1017144100).

Almost surely, 2^3961508563 is an apocalyptic number.

3961508563 is a deficient number, since it is larger than the sum of its proper divisors (107067837).

3961508563 is a wasteful number, since it uses less digits than its factorization.

3961508563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107067836.

The product of its (nonzero) digits is 583200, while the sum is 46.

The square root of 3961508563 is about 62940.5160687454. The cubic root of 3961508563 is about 1582.2928526338.

The spelling of 3961508563 in words is "three billion, nine hundred sixty-one million, five hundred eight thousand, five hundred sixty-three".