18426850850 has 24 divisors (see below), whose sum is σ = 35455805460. Its totient is φ = 7116576320.

The previous prime is 18426850831. The next prime is 18426850853. The reversal of 18426850850 is 5805862481.

It can be written as a sum of positive squares in 6 ways, for example, as 11930974441 + 6495876409 = 109229^2 + 80597^2 .

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 18426850795 and 18426850804.

It is not an unprimeable number, because it can be changed into a prime (18426850853) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6352637 + ... + 6355536.

Almost surely, 2^18426850850 is an apocalyptic number.

18426850850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18426850850 is a deficient number, since it is larger than the sum of its proper divisors (17028954610).

18426850850 is a wasteful number, since it uses less digits than its factorization.

18426850850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12708214 (or 12708209 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 47.

The spelling of 18426850850 in words is "eighteen billion, four hundred twenty-six million, eight hundred fifty thousand, eight hundred fifty".