8481891117 has 16 divisors (see below), whose sum is σ = 12940403840. Its totient is φ = 4840938432.

The previous prime is 8481891101. The next prime is 8481891127. The reversal of 8481891117 is 7111981848.

It is not a de Polignac number, because 8481891117 - 2⁴ = 8481891101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8481891127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 226198 + ... + 261015.

It is an arithmetic number, because the mean of its divisors is an integer number (808775240).

Almost surely, 2^8481891117 is an apocalyptic number.

It is an amenable number.

8481891117 is a deficient number, since it is larger than the sum of its proper divisors (4458512723).

8481891117 is a wasteful number, since it uses less digits than its factorization.

8481891117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488052.

The product of its digits is 129024, while the sum is 48.

The square root of 8481891117 is about 92097.1830025219. The cubic root of 8481891117 is about 2039.3772221891.

The spelling of 8481891117 in words is "eight billion, four hundred eighty-one million, eight hundred ninety-one thousand, one hundred seventeen".