18630227642 has 32 divisors (see below), whose sum is σ = 31280884992. Its totient is φ = 8265340224.

The previous prime is 18630227617. The next prime is 18630227653. The reversal of 18630227642 is 24672203681.

It is a self number, because there is not a number n which added to its sum of digits gives 18630227642.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36818 + ... + 196509.

It is an arithmetic number, because the mean of its divisors is an integer number (977527656).

Almost surely, 2^18630227642 is an apocalyptic number.

18630227642 is a deficient number, since it is larger than the sum of its proper divisors (12650657350).

18630227642 is a wasteful number, since it uses less digits than its factorization.

18630227642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233462.

The product of its (nonzero) digits is 193536, while the sum is 41.

The spelling of 18630227642 in words is "eighteen billion, six hundred thirty million, two hundred twenty-seven thousand, six hundred forty-two".