801862218 has 24 divisors (see below), whose sum is σ = 1746973956. Its totient is φ = 265809600.

The previous prime is 801862177. The next prime is 801862219. The reversal of 801862218 is 812268108.

801862218 is a `hidden beast` number, since 8 + 0 + 18 + 622 + 18 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 475806969 + 326055249 = 21813^2 + 18057^2 .

It is not an unprimeable number, because it can be changed into a prime (801862219) 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, 119803 + ... + 126318.

Almost surely, 2^801862218 is an apocalyptic number.

801862218 is an abundant number, since it is smaller than the sum of its proper divisors (945111738).

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

801862218 is a wasteful number, since it uses less digits than its factorization.

801862218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246310 (or 246307 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 36.

The square root of 801862218 is about 28317.1717867445. The cubic root of 801862218 is about 929.0375127323.

The spelling of 801862218 in words is "eight hundred one million, eight hundred sixty-two thousand, two hundred eighteen".