1801620606 has 16 divisors (see below), whose sum is σ = 3691125648. Its totient is φ = 585892800.

The previous prime is 1801620571. The next prime is 1801620607. The reversal of 1801620606 is 6060261081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1801620607) 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, 3661585 + ... + 3662076.

It is an arithmetic number, because the mean of its divisors is an integer number (230695353).

Almost surely, 2^1801620606 is an apocalyptic number.

1801620606 is an abundant number, since it is smaller than the sum of its proper divisors (1889505042).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1801620606 is a wasteful number, since it uses less digits than its factorization.

1801620606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7323707.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 1801620606 is about 42445.5015991094. The cubic root of 1801620606 is about 1216.8053582393.

Adding to 1801620606 its reverse (6060261081), we get a palindrome (7861881687).

The spelling of 1801620606 in words is "one billion, eight hundred one million, six hundred twenty thousand, six hundred six".