18327919650 has 48 divisors (see below), whose sum is σ = 47845524000. Its totient is φ = 4630210560.

The previous prime is 18327919607. The next prime is 18327919663. The reversal of 18327919650 is 5691972381.

It is a super-2 number, since 2×18327919650² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18327919593 and 18327919602.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3212575 + ... + 3218274.

It is an arithmetic number, because the mean of its divisors is an integer number (996781750).

Almost surely, 2^18327919650 is an apocalyptic number.

18327919650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18327919650 is an abundant number, since it is smaller than the sum of its proper divisors (29517604350).

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

18327919650 is a wasteful number, since it uses less digits than its factorization.

18327919650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6430883 (or 6430878 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 51.

The spelling of 18327919650 in words is "eighteen billion, three hundred twenty-seven million, nine hundred nineteen thousand, six hundred fifty".