1810018801 has 2 divisors, whose sum is σ = 1810018802. Its totient is φ = 1810018800.

The previous prime is 1810018757. The next prime is 1810018811. The reversal of 1810018801 is 1088100181.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1027138401 + 782880400 = 32049^2 + 27980^2 .

It is a cyclic number.

It is not a de Polignac number, because 1810018801 - 2⁹ = 1810018289 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1810018801.

It is not a weakly prime, because it can be changed into another prime (1810018811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 905009400 + 905009401.

It is an arithmetic number, because the mean of its divisors is an integer number (905009401).

Almost surely, 2^1810018801 is an apocalyptic number.

It is an amenable number.

1810018801 is a deficient number, since it is larger than the sum of its proper divisors (1).

1810018801 is an equidigital number, since it uses as much as digits as its factorization.

1810018801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 512, while the sum is 28.

The square root of 1810018801 is about 42544.3157307765. The cubic root of 1810018801 is about 1218.6931273535.

Adding to 1810018801 its reverse (1088100181), we get a palindrome (2898118982).

The spelling of 1810018801 in words is "one billion, eight hundred ten million, eighteen thousand, eight hundred one".