218900863458 has 48 divisors (see below), whose sum is σ = 496960079616. Its totient is φ = 69504842880.

The previous prime is 218900863417. The next prime is 218900863459. The reversal of 218900863458 is 854368009812.

218900863458 is a `hidden beast` number, since 2 + 189 + 0 + 0 + 8 + 6 + 3 + 458 = 666.

218900863458 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (218900863459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 997210 + ... + 1196757.

It is an arithmetic number, because the mean of its divisors is an integer number (10353334992).

Almost surely, 2^218900863458 is an apocalyptic number.

218900863458 is an abundant number, since it is smaller than the sum of its proper divisors (278059216158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

218900863458 is a wasteful number, since it uses less digits than its factorization.

218900863458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2194239 (or 2194236 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 54.

The spelling of 218900863458 in words is "two hundred eighteen billion, nine hundred million, eight hundred sixty-three thousand, four hundred fifty-eight".