18328216250 has 20 divisors (see below), whose sum is σ = 34354410882. Its totient is φ = 7331286000.

The previous prime is 18328216213. The next prime is 18328216301. The reversal of 18328216250 is 5261282381.

It can be written as a sum of positive squares in 5 ways, for example, as 1070402089 + 17257814161 = 32717^2 + 131369^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 7330037 + ... + 7332536.

Almost surely, 2^18328216250 is an apocalyptic number.

18328216250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18328216250 is a deficient number, since it is larger than the sum of its proper divisors (16026194632).

18328216250 is an equidigital number, since it uses as much as digits as its factorization.

18328216250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14662595 (or 14662580 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 38.

The spelling of 18328216250 in words is "eighteen billion, three hundred twenty-eight million, two hundred sixteen thousand, two hundred fifty".