8381018 has 12 divisors (see below), whose sum is σ = 12924702. Its totient is φ = 4075920.

The previous prime is 8381003. The next prime is 8381047. The reversal of 8381018 is 8101838.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 7414729 + 966289 = 2723^2 + 983^2 .

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1208 + ... + 4268.

Almost surely, 2^8381018 is an apocalyptic number.

8381018 is a deficient number, since it is larger than the sum of its proper divisors (4543684).

8381018 is a wasteful number, since it uses less digits than its factorization.

8381018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3137 (or 3100 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 29.

The square root of 8381018 is about 2894.9987910187. The cubic root of 8381018 is about 203.1260349612.

The spelling of 8381018 in words is "eight million, three hundred eighty-one thousand, eighteen".