18344259250 has 16 divisors (see below), whose sum is σ = 34340453784. Its totient is φ = 7337703600.

The previous prime is 18344259233. The next prime is 18344259253. The reversal of 18344259250 is 5295244381.

It can be written as a sum of positive squares in 4 ways, for example, as 10802899969 + 7541359281 = 103937^2 + 86841^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18344259197 and 18344259206.

It is not an unprimeable number, because it can be changed into a prime (18344259253) 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 7 ways as a sum of consecutive naturals, for example, 36688269 + ... + 36688768.

Almost surely, 2^18344259250 is an apocalyptic number.

18344259250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18344259250 is a deficient number, since it is larger than the sum of its proper divisors (15996194534).

18344259250 is an equidigital number, since it uses as much as digits as its factorization.

18344259250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73377054 (or 73377044 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 43.

The spelling of 18344259250 in words is "eighteen billion, three hundred forty-four million, two hundred fifty-nine thousand, two hundred fifty".