1818608801 has 2 divisors, whose sum is σ = 1818608802. Its totient is φ = 1818608800.

The previous prime is 1818608797. The next prime is 1818608819. The reversal of 1818608801 is 1088068181.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1814845201 + 3763600 = 42601^2 + 1940^2 .

It is an emirp because it is prime and its reverse (1088068181) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 1088098181 and 1818908801.

It is a cyclic number.

It is not a de Polignac number, because 1818608801 - 2² = 1818608797 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1818608851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 909304400 + 909304401.

It is an arithmetic number, because the mean of its divisors is an integer number (909304401).

Almost surely, 2^1818608801 is an apocalyptic number.

It is an amenable number.

1818608801 is a deficient number, since it is larger than the sum of its proper divisors (1).

1818608801 is an equidigital number, since it uses as much as digits as its factorization.

1818608801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24576, while the sum is 41.

The square root of 1818608801 is about 42645.1497945546. The cubic root of 1818608801 is about 1220.6179797129.

The spelling of 1818608801 in words is "one billion, eight hundred eighteen million, six hundred eight thousand, eight hundred one".