8169223181 has 8 divisors (see below), whose sum is σ = 9338159040. Its totient is φ = 7000763328.

The previous prime is 8169223171. The next prime is 8169223193. The reversal of 8169223181 is 1813229618.

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

It is a cyclic number.

It is not a de Polignac number, because 8169223181 - 2¹⁴ = 8169206797 is a prime.

It is a super-2 number, since 2×8169223181² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8169223141) 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, 81431 + ... + 151556.

It is an arithmetic number, because the mean of its divisors is an integer number (1167269880).

Almost surely, 2^8169223181 is an apocalyptic number.

It is an amenable number.

8169223181 is a deficient number, since it is larger than the sum of its proper divisors (1168935859).

8169223181 is a wasteful number, since it uses less digits than its factorization.

8169223181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238003.

The product of its digits is 41472, while the sum is 41.

The square root of 8169223181 is about 90383.7550724686. The cubic root of 8169223181 is about 2014.0036517729.

The spelling of 8169223181 in words is "eight billion, one hundred sixty-nine million, two hundred twenty-three thousand, one hundred eighty-one".