18053187626 has 4 divisors (see below), whose sum is σ = 27079781442. Its totient is φ = 9026593812.

The previous prime is 18053187601. The next prime is 18053187643. The reversal of 18053187626 is 62678135081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62678135081 = 53917 ⋅1162493.

It can be written as a sum of positive squares in only one way, i.e., 18045892225 + 7295401 = 134335^2 + 2701^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4513296905 + ... + 4513296908.

Almost surely, 2^18053187626 is an apocalyptic number.

18053187626 is a deficient number, since it is larger than the sum of its proper divisors (9026593816).

18053187626 is an equidigital number, since it uses as much as digits as its factorization.

18053187626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9026593815.

The product of its (nonzero) digits is 483840, while the sum is 47.

The spelling of 18053187626 in words is "eighteen billion, fifty-three million, one hundred eighty-seven thousand, six hundred twenty-six".