18288286573 has 4 divisors (see below), whose sum is σ = 18419857120. Its totient is φ = 18156716028.

The previous prime is 18288286519. The next prime is 18288286609. The reversal of 18288286573 is 37568288281.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37568288281 = 25639 ⋅1465279.

It is a cyclic number.

It is not a de Polignac number, because 18288286573 - 2²¹ = 18286189421 is a prime.

It is a super-2 number, since 2×18288286573² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18288286873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65785065 + ... + 65785342.

It is an arithmetic number, because the mean of its divisors is an integer number (4604964280).

Almost surely, 2^18288286573 is an apocalyptic number.

It is an amenable number.

18288286573 is a deficient number, since it is larger than the sum of its proper divisors (131570547).

18288286573 is a wasteful number, since it uses less digits than its factorization.

18288286573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131570546.

The product of its digits is 10321920, while the sum is 58.

The spelling of 18288286573 in words is "eighteen billion, two hundred eighty-eight million, two hundred eighty-six thousand, five hundred seventy-three".