1813045017849 has 16 divisors (see below), whose sum is σ = 2603390594112. Its totient is φ = 1115701195968.

The previous prime is 1813045017799. The next prime is 1813045017869. The reversal of 1813045017849 is 9487105403181.

It is not a de Polignac number, because 1813045017849 - 2⁹ = 1813045017337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1813045017869) 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, 2160787 + ... + 2880119.

It is an arithmetic number, because the mean of its divisors is an integer number (162711912132).

Almost surely, 2^{1813045017849} is an apocalyptic number.

It is an amenable number.

1813045017849 is a deficient number, since it is larger than the sum of its proper divisors (790345576263).

1813045017849 is a wasteful number, since it uses less digits than its factorization.

1813045017849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783976.

The product of its (nonzero) digits is 967680, while the sum is 51.

The spelling of 1813045017849 in words is "one trillion, eight hundred thirteen billion, forty-five million, seventeen thousand, eight hundred forty-nine".