8644014981 has 24 divisors (see below), whose sum is σ = 14896717440. Its totient is φ = 4939436376.

The previous prime is 8644014971. The next prime is 8644014989. The reversal of 8644014981 is 1894104468.

It is not a de Polignac number, because 8644014981 - 2⁷ = 8644014853 is a prime.

It is a super-2 number, since 2×8644014981² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8644014989) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3265501 + ... + 3268146.

It is an arithmetic number, because the mean of its divisors is an integer number (620696560).

Almost surely, 2^8644014981 is an apocalyptic number.

It is an amenable number.

8644014981 is a deficient number, since it is larger than the sum of its proper divisors (6252702459).

8644014981 is a wasteful number, since it uses less digits than its factorization.

8644014981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6533670 (or 6533657 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The square root of 8644014981 is about 92973.1949596226. The cubic root of 8644014981 is about 2052.2889349819.

The spelling of 8644014981 in words is "eight billion, six hundred forty-four million, fourteen thousand, nine hundred eighty-one".