1813045017805 has 16 divisors (see below), whose sum is σ = 2566670183424. Its totient is φ = 1203126647040.

The previous prime is 1813045017799. The next prime is 1813045017869. The reversal of 1813045017805 is 5087105403181.

It is not a de Polignac number, because 1813045017805 - 2¹¹ = 1813045015757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 835503532 + ... + 835505701.

It is an arithmetic number, because the mean of its divisors is an integer number (160416886464).

Almost surely, 2^{1813045017805} is an apocalyptic number.

It is an amenable number.

1813045017805 is a deficient number, since it is larger than the sum of its proper divisors (753625165619).

1813045017805 is a wasteful number, since it uses less digits than its factorization.

1813045017805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1671009276.

The product of its (nonzero) digits is 134400, while the sum is 43.

The spelling of 1813045017805 in words is "one trillion, eight hundred thirteen billion, forty-five million, seventeen thousand, eight hundred five".