8181365 has 8 divisors (see below), whose sum is σ = 10134528. Its totient is φ = 6333840.

The previous prime is 8181361. The next prime is 8181377. The reversal of 8181365 is 5631818.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8181365 - 2² = 8181361 is a prime.

It is a Duffinian number.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 26237 + ... + 26546.

It is an arithmetic number, because the mean of its divisors is an integer number (1266816).

Almost surely, 2^8181365 is an apocalyptic number.

It is an amenable number.

8181365 is a deficient number, since it is larger than the sum of its proper divisors (1953163).

8181365 is a wasteful number, since it uses less digits than its factorization.

8181365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52819.

The product of its digits is 5760, while the sum is 32.

The square root of 8181365 is about 2860.3085497897. The cubic root of 8181365 is about 201.5000954380.

The spelling of 8181365 in words is "eight million, one hundred eighty-one thousand, three hundred sixty-five".