401593804818 has 32 divisors (see below), whose sum is σ = 806598596160. Its totient is φ = 133296384000.

The previous prime is 401593804783. The next prime is 401593804819. The reversal of 401593804818 is 818408395104.

It is a super-2 number, since 2×401593804818² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401593804819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6076978 + ... + 6142706.

It is an arithmetic number, because the mean of its divisors is an integer number (25206206130).

Almost surely, 2^401593804818 is an apocalyptic number.

401593804818 is an abundant number, since it is smaller than the sum of its proper divisors (405004791342).

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

401593804818 is a wasteful number, since it uses less digits than its factorization.

401593804818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70042.

The product of its (nonzero) digits is 1105920, while the sum is 51.

The spelling of 401593804818 in words is "four hundred one billion, five hundred ninety-three million, eight hundred four thousand, eight hundred eighteen".