18538852003522 has 4 divisors (see below), whose sum is σ = 27808278005286. Its totient is φ = 9269426001760.

The previous prime is 18538852003501. The next prime is 18538852003549. The reversal of 18538852003522 is 22530025883581.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 17679914153001 + 858937850521 = 4204749^2 + 926789^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18538852003522.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4634713000879 + ... + 4634713000882.

Almost surely, 2^{18538852003522} is an apocalyptic number.

18538852003522 is a deficient number, since it is larger than the sum of its proper divisors (9269426001764).

18538852003522 is an equidigital number, since it uses as much as digits as its factorization.

18538852003522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9269426001763.

The product of its (nonzero) digits is 4608000, while the sum is 52.

The spelling of 18538852003522 in words is "eighteen trillion, five hundred thirty-eight billion, eight hundred fifty-two million, three thousand, five hundred twenty-two".