8181369 has 24 divisors (see below), whose sum is σ = 14302080. Its totient is φ = 4399488.

The previous prime is 8181361. The next prime is 8181377. The reversal of 8181369 is 9631818.

8181369 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (8181361) and next prime (8181377).

It is not a de Polignac number, because 8181369 - 2³ = 8181361 is a prime.

It is a super-2 number, since 2×8181369² = 133869597428322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8181361) 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, 2749 + ... + 4890.

It is an arithmetic number, because the mean of its divisors is an integer number (595920).

Almost surely, 2^8181369 is an apocalyptic number.

It is an amenable number.

8181369 is a deficient number, since it is larger than the sum of its proper divisors (6120711).

8181369 is a wasteful number, since it uses less digits than its factorization.

8181369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7669 (or 7666 counting only the distinct ones).

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

The square root of 8181369 is about 2860.3092490149. The cubic root of 8181369 is about 201.5001282769.

It can be divided in two parts, 818 and 1369, that added together give a 7-th power (2187 = 3⁷).

The spelling of 8181369 in words is "eight million, one hundred eighty-one thousand, three hundred sixty-nine".