8181038 has 4 divisors (see below), whose sum is σ = 12271560. Its totient is φ = 4090518.

The previous prime is 8181023. The next prime is 8181049. The reversal of 8181038 is 8301818.

It is a happy number.

It is a semiprime because it is the product of two primes.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 8181038.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2045258 + ... + 2045261.

It is an arithmetic number, because the mean of its divisors is an integer number (3067890).

Almost surely, 2^8181038 is an apocalyptic number.

8181038 is a deficient number, since it is larger than the sum of its proper divisors (4090522).

8181038 is a wasteful number, since it uses less digits than its factorization.

8181038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4090521.

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

The square root of 8181038 is about 2860.2513875532. The cubic root of 8181038 is about 201.4974108245.

The spelling of 8181038 in words is "eight million, one hundred eighty-one thousand, thirty-eight".