818900055 has 12 divisors (see below), whose sum is σ = 1419426840. Its totient is φ = 436746672.

The previous prime is 818900053. The next prime is 818900087. The reversal of 818900055 is 550009818.

It is not a de Polignac number, because 818900055 - 2¹ = 818900053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 818899992 and 818900019.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818900053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9098845 + ... + 9098934.

It is an arithmetic number, because the mean of its divisors is an integer number (118285570).

Almost surely, 2^818900055 is an apocalyptic number.

818900055 is a deficient number, since it is larger than the sum of its proper divisors (600526785).

818900055 is a wasteful number, since it uses less digits than its factorization.

818900055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18197790 (or 18197787 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 36.

The square root of 818900055 is about 28616.4298087655. The cubic root of 818900055 is about 935.5714637849.

The spelling of 818900055 in words is "eight hundred eighteen million, nine hundred thousand, fifty-five".