8168913 has 6 divisors (see below), whose sum is σ = 11799554. Its totient is φ = 5445936.

The previous prime is 8168911. The next prime is 8168921. The reversal of 8168913 is 3198618.

It can be written as a sum of positive squares in only one way, i.e., 8105409 + 63504 = 2847^2 + 252^2 .

It is not a de Polignac number, because 8168913 - 2¹ = 8168911 is a prime.

It is a super-2 number, since 2×8168913² = 133462279203138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8168911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 453820 + ... + 453837.

Almost surely, 2^8168913 is an apocalyptic number.

It is an amenable number.

8168913 is a deficient number, since it is larger than the sum of its proper divisors (3630641).

8168913 is a wasteful number, since it uses less digits than its factorization.

8168913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907663 (or 907660 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 8168913 is about 2858.1310326855. The cubic root of 8168913 is about 201.3978161239.

It can be divided in two parts, 8 and 168913, that added together give a square (168921 = 411²).

The spelling of 8168913 in words is "eight million, one hundred sixty-eight thousand, nine hundred thirteen".