818803138 has 8 divisors (see below), whose sum is σ = 1292847120. Its totient is φ = 387854100.

The previous prime is 818803129. The next prime is 818803159. The reversal of 818803138 is 831308818.

818803138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 818803138.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10773688 + ... + 10773763.

It is an arithmetic number, because the mean of its divisors is an integer number (161605890).

Almost surely, 2^818803138 is an apocalyptic number.

818803138 is a deficient number, since it is larger than the sum of its proper divisors (474043982).

818803138 is a wasteful number, since it uses less digits than its factorization.

818803138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21547472.

The product of its (nonzero) digits is 36864, while the sum is 40.

The square root of 818803138 is about 28614.7363783069. The cubic root of 818803138 is about 935.5345539666.

The spelling of 818803138 in words is "eight hundred eighteen million, eight hundred three thousand, one hundred thirty-eight".