18174984850 has 48 divisors (see below), whose sum is σ = 38819702880. Its totient is φ = 6261235200.

The previous prime is 18174984827. The next prime is 18174984853. The reversal of 18174984850 is 5848947181.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a junction number, because it is equal to n+sod(n) for n = 18174984791 and 18174984800.

It is not an unprimeable number, because it can be changed into a prime (18174984853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 859167 + ... + 880066.

It is an arithmetic number, because the mean of its divisors is an integer number (808743810).

Almost surely, 2^18174984850 is an apocalyptic number.

18174984850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18174984850 is an abundant number, since it is smaller than the sum of its proper divisors (20644718030).

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

18174984850 is a wasteful number, since it uses less digits than its factorization.

18174984850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1739275 (or 1739270 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 55.

The spelling of 18174984850 in words is "eighteen billion, one hundred seventy-four million, nine hundred eighty-four thousand, eight hundred fifty".