1801616011 has 16 divisors (see below), whose sum is σ = 1969470720. Its totient is φ = 1638064800.

The previous prime is 1801616009. The next prime is 1801616041. The reversal of 1801616011 is 1106161081.

It is a cyclic number.

It is not a de Polignac number, because 1801616011 - 2¹ = 1801616009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1801616041) 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 15 ways as a sum of consecutive naturals, for example, 385036 + ... + 389686.

It is an arithmetic number, because the mean of its divisors is an integer number (123091920).

Almost surely, 2^1801616011 is an apocalyptic number.

1801616011 is a deficient number, since it is larger than the sum of its proper divisors (167854709).

1801616011 is a wasteful number, since it uses less digits than its factorization.

1801616011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5106.

The product of its (nonzero) digits is 288, while the sum is 25.

The square root of 1801616011 is about 42445.4474708419. The cubic root of 1801616011 is about 1216.8043237585.

Adding to 1801616011 its reverse (1106161081), we get a palindrome (2907777092).

The spelling of 1801616011 in words is "one billion, eight hundred one million, six hundred sixteen thousand, eleven".