1806611201 has 2 divisors, whose sum is σ = 1806611202. Its totient is φ = 1806611200.

The previous prime is 1806611171. The next prime is 1806611203. The reversal of 1806611201 is 1021166081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1806250000 + 361201 = 42500^2 + 601^2 .

It is a cyclic number.

It is not a de Polignac number, because 1806611201 - 2²⁶ = 1739502337 is a prime.

Together with 1806611203, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1806611203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 903305600 + 903305601.

It is an arithmetic number, because the mean of its divisors is an integer number (903305601).

Almost surely, 2^1806611201 is an apocalyptic number.

It is an amenable number.

1806611201 is a deficient number, since it is larger than the sum of its proper divisors (1).

1806611201 is an equidigital number, since it uses as much as digits as its factorization.

1806611201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 1806611201 is about 42504.2492111083. The cubic root of 1806611201 is about 1217.9278632019.

Adding to 1806611201 its reverse (1021166081), we get a palindrome (2827777282).

The spelling of 1806611201 in words is "one billion, eight hundred six million, six hundred eleven thousand, two hundred one".