3805173685218 has 32 divisors (see below), whose sum is σ = 8011884254400. Its totient is φ = 1201484952576.

The previous prime is 3805173685129. The next prime is 3805173685267. The reversal of 3805173685218 is 8125863715083.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1141071 + ... + 2985362.

It is an arithmetic number, because the mean of its divisors is an integer number (250371382950).

Almost surely, 2^{3805173685218} is an apocalyptic number.

3805173685218 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

3805173685218 is an abundant number, since it is smaller than the sum of its proper divisors (4206710569182).

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

3805173685218 is a wasteful number, since it uses less digits than its factorization.

3805173685218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4134546.

The product of its (nonzero) digits is 9676800, while the sum is 57.

The spelling of 3805173685218 in words is "three trillion, eight hundred five billion, one hundred seventy-three million, six hundred eighty-five thousand, two hundred eighteen".