3891016085 has 8 divisors (see below), whose sum is σ = 5093693856. Its totient is φ = 2829829840.

The previous prime is 3891016079. The next prime is 3891016091. The reversal of 3891016085 is 5806101983.

It is an interprime number because it is at equal distance from previous prime (3891016079) and next prime (3891016091).

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

It is not a de Polignac number, because 3891016085 - 2⁴ = 3891016069 is a prime.

It is a super-3 number, since 3×3891016085³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35372819 + ... + 35372928.

It is an arithmetic number, because the mean of its divisors is an integer number (636711732).

Almost surely, 2^3891016085 is an apocalyptic number.

It is an amenable number.

3891016085 is a deficient number, since it is larger than the sum of its proper divisors (1202677771).

3891016085 is a wasteful number, since it uses less digits than its factorization.

3891016085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70745763.

The product of its (nonzero) digits is 51840, while the sum is 41.

The square root of 3891016085 is about 62378.0096267908. The cubic root of 3891016085 is about 1572.8513352789.

The spelling of 3891016085 in words is "three billion, eight hundred ninety-one million, sixteen thousand, eighty-five".