1813994204106 has 192 divisors, whose sum is σ = 4621539686400. Its totient is φ = 463997445120.

The previous prime is 1813994204093. The next prime is 1813994204117. The reversal of 1813994204106 is 6014024993181.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 50512545 + ... + 50548443.

It is an arithmetic number, because the mean of its divisors is an integer number (24070519200).

Almost surely, 2^{1813994204106} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1813994204106, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2310769843200).

1813994204106 is an abundant number, since it is smaller than the sum of its proper divisors (2807545482294).

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

1813994204106 is a wasteful number, since it uses less digits than its factorization.

1813994204106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36149 (or 36132 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 48.

The spelling of 1813994204106 in words is "one trillion, eight hundred thirteen billion, nine hundred ninety-four million, two hundred four thousand, one hundred six".