18632506008 has 16 divisors (see below), whose sum is σ = 46581265080. Its totient is φ = 6210835328.

The previous prime is 18632506007. The next prime is 18632506049. The reversal of 18632506008 is 80060523681.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18632506007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 388177185 + ... + 388177232.

Almost surely, 2^18632506008 is an apocalyptic number.

It is an amenable number.

18632506008 is an abundant number, since it is smaller than the sum of its proper divisors (27948759072).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18632506008 is a wasteful number, since it uses less digits than its factorization.

18632506008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776354426 (or 776354422 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The spelling of 18632506008 in words is "eighteen billion, six hundred thirty-two million, five hundred six thousand, eight".