1813810604000 has 192 divisors, whose sum is σ = 4698860362560. Its totient is φ = 686199859200.

The previous prime is 1813810603939. The next prime is 1813810604009. The reversal of 1813810604000 is 4060183181.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1813810604009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46568534 + ... + 46607466.

It is an arithmetic number, because the mean of its divisors is an integer number (24473231055).

Almost surely, 2^{1813810604000} is an apocalyptic number.

1813810604000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1813810604000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2349430181280).

1813810604000 is an abundant number, since it is smaller than the sum of its proper divisors (2885049758560).

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

1813810604000 is a wasteful number, since it uses less digits than its factorization.

1813810604000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39590 (or 39572 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

Adding to 1813810604000 its reverse (4060183181), we get a palindrome (1817870787181).

The spelling of 1813810604000 in words is "one trillion, eight hundred thirteen billion, eight hundred ten million, six hundred four thousand".