8181338 has 16 divisors (see below), whose sum is σ = 13449024. Its totient is φ = 3701760.

The previous prime is 8181317. The next prime is 8181347. The reversal of 8181338 is 8331818.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4931 + ... + 6377.

It is an arithmetic number, because the mean of its divisors is an integer number (840564).

Almost surely, 2^8181338 is an apocalyptic number.

8181338 is a deficient number, since it is larger than the sum of its proper divisors (5267686).

8181338 is a wasteful number, since it uses less digits than its factorization.

8181338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1717.

The product of its digits is 4608, while the sum is 32.

The square root of 8181338 is about 2860.3038300153. The cubic root of 8181338 is about 201.4998737754.

The spelling of 8181338 in words is "eight million, one hundred eighty-one thousand, three hundred thirty-eight".