18630227643 has 16 divisors (see below), whose sum is σ = 26217818880. Its totient is φ = 11734900704.

The previous prime is 18630227617. The next prime is 18630227653. The reversal of 18630227643 is 34672203681.

It is not a de Polignac number, because 18630227643 - 2⁵ = 18630227611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18630227595 and 18630227604.

It is not an unprimeable number, because it can be changed into a prime (18630227653) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 416871 + ... + 459392.

It is an arithmetic number, because the mean of its divisors is an integer number (1638613680).

Almost surely, 2^18630227643 is an apocalyptic number.

18630227643 is a deficient number, since it is larger than the sum of its proper divisors (7587591237).

18630227643 is a wasteful number, since it uses less digits than its factorization.

18630227643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876658.

The product of its (nonzero) digits is 290304, while the sum is 42.

The spelling of 18630227643 in words is "eighteen billion, six hundred thirty million, two hundred twenty-seven thousand, six hundred forty-three".