1813066476 has 72 divisors (see below), whose sum is σ = 4590878544. Its totient is φ = 556657920.

The previous prime is 1813066459. The next prime is 1813066481. The reversal of 1813066476 is 6746603181.

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, 1534606 + ... + 1535786.

It is an arithmetic number, because the mean of its divisors is an integer number (63762202).

Almost surely, 2^1813066476 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 1813066476, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2295439272).

1813066476 is an abundant number, since it is smaller than the sum of its proper divisors (2777812068).

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

1813066476 is a wasteful number, since it uses less digits than its factorization.

1813066476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1971 (or 1956 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 1813066476 is about 42580.1183182950. The cubic root of 1813066476 is about 1219.3767478590.

The spelling of 1813066476 in words is "one billion, eight hundred thirteen million, sixty-six thousand, four hundred seventy-six".