18653784632 has 32 divisors (see below), whose sum is σ = 40569006720. Its totient is φ = 7875156960.

The previous prime is 18653784607. The next prime is 18653784661. The reversal of 18653784632 is 23648735681.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2482094 + ... + 2489597.

It is an arithmetic number, because the mean of its divisors is an integer number (1267781460).

Almost surely, 2^18653784632 is an apocalyptic number.

It is an amenable number.

18653784632 is an abundant number, since it is smaller than the sum of its proper divisors (21915222088).

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

18653784632 is a wasteful number, since it uses less digits than its factorization.

18653784632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4971771 (or 4971767 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 53.

The spelling of 18653784632 in words is "eighteen billion, six hundred fifty-three million, seven hundred eighty-four thousand, six hundred thirty-two".