1813500004104 has 96 divisors (see below), whose sum is σ = 4994368554240. Its totient is φ = 594317577600.

The previous prime is 1813500004079. The next prime is 1813500004157. The reversal of 1813500004104 is 4014000053181.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9599599 + ... + 9786689.

It is an arithmetic number, because the mean of its divisors is an integer number (52024672440).

Almost surely, 2^{1813500004104} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1813500004104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2497184277120).

1813500004104 is an abundant number, since it is smaller than the sum of its proper divisors (3180868550136).

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

1813500004104 is a wasteful number, since it uses less digits than its factorization.

1813500004104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189371 (or 189364 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

Adding to 1813500004104 its reverse (4014000053181), we get a palindrome (5827500057285).

The spelling of 1813500004104 in words is "one trillion, eight hundred thirteen billion, five hundred million, four thousand, one hundred four".