1813004808 has 64 divisors (see below), whose sum is σ = 4735272960. Its totient is φ = 577363776.

The previous prime is 1813004801. The next prime is 1813004819. The reversal of 1813004808 is 8084003181.

It is a happy number.

It is a super-2 number, since 2×1813004808² = 6573972867662233728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1813004801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 653841 + ... + 656607.

It is an arithmetic number, because the mean of its divisors is an integer number (73988640).

Almost surely, 2^1813004808 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 1813004808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2367636480).

1813004808 is an abundant number, since it is smaller than the sum of its proper divisors (2922268152).

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

1813004808 is a wasteful number, since it uses less digits than its factorization.

1813004808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3986 (or 3982 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 33.

The square root of 1813004808 is about 42579.3941713595. The cubic root of 1813004808 is about 1219.3629227770.

Adding to 1813004808 its reverse (8084003181), we get a palindrome (9897007989).

The spelling of 1813004808 in words is "one billion, eight hundred thirteen million, four thousand, eight hundred eight".