8181069 has 8 divisors (see below), whose sum is σ = 11747232. Its totient is φ = 5034480.

The previous prime is 8181053. The next prime is 8181071. The reversal of 8181069 is 9601818.

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

It is not a de Polignac number, because 8181069 - 2⁴ = 8181053 is a prime.

It is a super-2 number, since 2×8181069² = 133859779965522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8181049) 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, 104847 + ... + 104924.

It is an arithmetic number, because the mean of its divisors is an integer number (1468404).

Almost surely, 2^8181069 is an apocalyptic number.

It is an amenable number.

8181069 is a deficient number, since it is larger than the sum of its proper divisors (3566163).

8181069 is a wasteful number, since it uses less digits than its factorization.

8181069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209787.

The product of its (nonzero) digits is 3456, while the sum is 33.

The square root of 8181069 is about 2860.2568066522. The cubic root of 8181069 is about 201.4976653322.

The spelling of 8181069 in words is "eight million, one hundred eighty-one thousand, sixty-nine".