818444806 has 8 divisors (see below), whose sum is σ = 1230959664. Its totient is φ = 408124920.

The previous prime is 818444797. The next prime is 818444807. The reversal of 818444806 is 608444818.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818444807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 547810 + ... + 549301.

It is an arithmetic number, because the mean of its divisors is an integer number (153869958).

Almost surely, 2^818444806 is an apocalyptic number.

818444806 is a deficient number, since it is larger than the sum of its proper divisors (412514858).

818444806 is a wasteful number, since it uses less digits than its factorization.

818444806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097486.

The product of its (nonzero) digits is 196608, while the sum is 43.

The square root of 818444806 is about 28608.4743738634. The cubic root of 818444806 is about 935.3980617026.

The spelling of 818444806 in words is "eight hundred eighteen million, four hundred forty-four thousand, eight hundred six".