8649186897 has 16 divisors (see below), whose sum is σ = 13072996160. Its totient is φ = 5042440512.

The previous prime is 8649186863. The next prime is 8649186907. The reversal of 8649186897 is 7986819468.

It is not a de Polignac number, because 8649186897 - 2⁸ = 8649186641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8649182897) 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, 5835418 + ... + 5836899.

It is an arithmetic number, because the mean of its divisors is an integer number (817062260).

Almost surely, 2^8649186897 is an apocalyptic number.

It is an amenable number.

8649186897 is a deficient number, since it is larger than the sum of its proper divisors (4423809263).

8649186897 is a wasteful number, since it uses less digits than its factorization.

8649186897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11672352.

The product of its digits is 41803776, while the sum is 66.

The square root of 8649186897 is about 93001.0048171524. The cubic root of 8649186897 is about 2052.6981641725.

The spelling of 8649186897 in words is "eight billion, six hundred forty-nine million, one hundred eighty-six thousand, eight hundred ninety-seven".