1813464563 has 8 divisors (see below), whose sum is σ = 1858552080. Its totient is φ = 1768417920.

The previous prime is 1813464553. The next prime is 1813464577. The reversal of 1813464563 is 3654643181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1813464563 - 2¹⁰ = 1813463539 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1813464563.

It is not an unprimeable number, because it can be changed into a prime (1813464503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92183 + ... + 110111.

It is an arithmetic number, because the mean of its divisors is an integer number (232319010).

Almost surely, 2^1813464563 is an apocalyptic number.

1813464563 is a deficient number, since it is larger than the sum of its proper divisors (45087517).

1813464563 is a wasteful number, since it uses less digits than its factorization.

1813464563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20437.

The product of its digits is 207360, while the sum is 41.

The square root of 1813464563 is about 42584.7926260068. The cubic root of 1813464563 is about 1219.4659857174.

The spelling of 1813464563 in words is "one billion, eight hundred thirteen million, four hundred sixty-four thousand, five hundred sixty-three".