1815385084713 has 32 divisors (see below), whose sum is σ = 2829516990720. Its totient is φ = 1148826395520.

The previous prime is 1815385084697. The next prime is 1815385084763. The reversal of 1815385084713 is 3174805835181.

1815385084713 is a `hidden beast` number, since 1 + 8 + 1 + 538 + 50 + 8 + 47 + 13 = 666.

It is not a de Polignac number, because 1815385084713 - 2⁴ = 1815385084697 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1815385084713.

It is not an unprimeable number, because it can be changed into a prime (1815385084763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22120045 + ... + 22201962.

It is an arithmetic number, because the mean of its divisors is an integer number (88422405960).

Almost surely, 2^{1815385084713} is an apocalyptic number.

It is an amenable number.

1815385084713 is a deficient number, since it is larger than the sum of its proper divisors (1014131906007).

1815385084713 is a wasteful number, since it uses less digits than its factorization.

1815385084713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44322094 (or 44322088 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 54.

The spelling of 1815385084713 in words is "one trillion, eight hundred fifteen billion, three hundred eighty-five million, eighty-four thousand, seven hundred thirteen".