805368018 has 48 divisors (see below), whose sum is σ = 2017854720. Its totient is φ = 212403744.

The previous prime is 805368017. The next prime is 805368037. The reversal of 805368018 is 810863508.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (805368017) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 101538 + ... + 109181.

It is an arithmetic number, because the mean of its divisors is an integer number (42038640).

Almost surely, 2^805368018 is an apocalyptic number.

805368018 is an abundant number, since it is smaller than the sum of its proper divisors (1212486702).

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

805368018 is a wasteful number, since it uses less digits than its factorization.

805368018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210751 (or 210744 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 805368018 is about 28379.0066422347. The cubic root of 805368018 is about 930.3894842192.

The spelling of 805368018 in words is "eight hundred five million, three hundred sixty-eight thousand, eighteen".