18071131573 has 8 divisors (see below), whose sum is σ = 19731073536. Its totient is φ = 16414041600.

The previous prime is 18071131549. The next prime is 18071131577. The reversal of 18071131573 is 37513117081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18071131573 - 2²⁵ = 18037577141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18071131577) 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 7 ways as a sum of consecutive naturals, for example, 699733 + ... + 725098.

It is an arithmetic number, because the mean of its divisors is an integer number (2466384192).

Almost surely, 2^18071131573 is an apocalyptic number.

It is an amenable number.

18071131573 is a deficient number, since it is larger than the sum of its proper divisors (1659941963).

18071131573 is a wasteful number, since it uses less digits than its factorization.

18071131573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1425995.

The product of its (nonzero) digits is 17640, while the sum is 37.

The spelling of 18071131573 in words is "eighteen billion, seventy-one million, one hundred thirty-one thousand, five hundred seventy-three".