1800009819126 has 40 divisors (see below), whose sum is σ = 4119171423840. Its totient is φ = 587237243472.

The previous prime is 1800009819067. The next prime is 1800009819149. The reversal of 1800009819126 is 6219189000081.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 118196341 + ... + 118211568.

It is an arithmetic number, because the mean of its divisors is an integer number (102979285596).

Almost surely, 2^{1800009819126} is an apocalyptic number.

1800009819126 is an abundant number, since it is smaller than the sum of its proper divisors (2319161604714).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1800009819126 is a wasteful number, since it uses less digits than its factorization.

1800009819126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236407970 (or 236407961 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 45.

The spelling of 1800009819126 in words is "one trillion, eight hundred billion, nine million, eight hundred nineteen thousand, one hundred twenty-six".