18485393522 has 4 divisors (see below), whose sum is σ = 27728090286. Its totient is φ = 9242696760.

The previous prime is 18485393519. The next prime is 18485393533. The reversal of 18485393522 is 22539358481.

It is a happy number.

It is a Cunningham number, because it is equal to 135961²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22539358481 = 3167 ⋅7116943.

It can be written as a sum of positive squares in only one way, i.e., 18485393521 + 1 = 135961^2 + 1^2 .

It is a super-3 number, since 3×18485393522³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4621348379 + ... + 4621348382.

Almost surely, 2^18485393522 is an apocalyptic number.

18485393522 is a deficient number, since it is larger than the sum of its proper divisors (9242696764).

18485393522 is an equidigital number, since it uses as much as digits as its factorization.

18485393522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9242696763.

The product of its digits is 2073600, while the sum is 50.

The spelling of 18485393522 in words is "eighteen billion, four hundred eighty-five million, three hundred ninety-three thousand, five hundred twenty-two".