18350166850 has 24 divisors (see below), whose sum is σ = 34514816580. Its totient is φ = 7257592320.

The previous prime is 18350166833. The next prime is 18350166859. The reversal of 18350166850 is 5866105381.

It can be written as a sum of positive squares in 6 ways, for example, as 3632352361 + 14717814489 = 60269^2 + 121317^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18350166797 and 18350166806.

It is not an unprimeable number, because it can be changed into a prime (18350166859) 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 11 ways as a sum of consecutive naturals, for example, 2057367 + ... + 2066266.

Almost surely, 2^18350166850 is an apocalyptic number.

18350166850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18350166850 is a deficient number, since it is larger than the sum of its proper divisors (16164649730).

18350166850 is a wasteful number, since it uses less digits than its factorization.

18350166850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4123734 (or 4123729 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 43.

The spelling of 18350166850 in words is "eighteen billion, three hundred fifty million, one hundred sixty-six thousand, eight hundred fifty".