3901716891 has 32 divisors (see below), whose sum is σ = 5919851520. Its totient is φ = 2538667872.

The previous prime is 3901716883. The next prime is 3901716911. The reversal of 3901716891 is 1986171093.

3901716891 is a `hidden beast` number, since 390 + 17 + 168 + 91 = 666.

It is not a de Polignac number, because 3901716891 - 2³ = 3901716883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3901716881) 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 31 ways as a sum of consecutive naturals, for example, 469216 + ... + 477458.

It is an arithmetic number, because the mean of its divisors is an integer number (184995360).

Almost surely, 2^3901716891 is an apocalyptic number.

3901716891 is a deficient number, since it is larger than the sum of its proper divisors (2018134629).

3901716891 is a wasteful number, since it uses less digits than its factorization.

3901716891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8672 (or 8666 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The square root of 3901716891 is about 62463.7246007633. The cubic root of 3901716891 is about 1574.2918648833.

The spelling of 3901716891 in words is "three billion, nine hundred one million, seven hundred sixteen thousand, eight hundred ninety-one".