18522095642 has 4 divisors (see below), whose sum is σ = 27783143466. Its totient is φ = 9261047820.

The previous prime is 18522095639. The next prime is 18522095651. The reversal of 18522095642 is 24659022581.

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., 15205602721 + 3316492921 = 123311^2 + 57589^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18522095593 and 18522095602.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4630523909 + ... + 4630523912.

Almost surely, 2^18522095642 is an apocalyptic number.

18522095642 is a deficient number, since it is larger than the sum of its proper divisors (9261047824).

18522095642 is an equidigital number, since it uses as much as digits as its factorization.

18522095642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9261047823.

The product of its (nonzero) digits is 345600, while the sum is 44.

The spelling of 18522095642 in words is "eighteen billion, five hundred twenty-two million, ninety-five thousand, six hundred forty-two".