18826144850 has 24 divisors (see below), whose sum is σ = 35210108388. Its totient is φ = 7488849600.

The previous prime is 18826144837. The next prime is 18826144867. The reversal of 18826144850 is 5844162881.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 717329089 + 18108815761 = 26783^2 + 134569^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18826144795 and 18826144804.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1031069 + ... + 1049168.

Almost surely, 2^18826144850 is an apocalyptic number.

18826144850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18826144850 is a deficient number, since it is larger than the sum of its proper divisors (16383963538).

18826144850 is a wasteful number, since it uses less digits than its factorization.

18826144850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2080430 (or 2080425 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 47.

The spelling of 18826144850 in words is "eighteen billion, eight hundred twenty-six million, one hundred forty-four thousand, eight hundred fifty".