2101803810 has 32 divisors (see below), whose sum is σ = 5151658752. Its totient is φ = 548555520.

The previous prime is 2101803791. The next prime is 2101803811. The reversal of 2101803810 is 183081012.

It is a super-2 number, since 2×2101803810² = 8835158511461032200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2101803811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 743911 + ... + 746730.

It is an arithmetic number, because the mean of its divisors is an integer number (160989336).

Almost surely, 2^2101803810 is an apocalyptic number.

2101803810 is an abundant number, since it is smaller than the sum of its proper divisors (3049854942).

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

2101803810 is a wasteful number, since it uses less digits than its factorization.

2101803810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1490698.

The product of its (nonzero) digits is 384, while the sum is 24.

The square root of 2101803810 is about 45845.4339056792. The cubic root of 2101803810 is about 1280.9457142644.

Adding to 2101803810 its reverse (183081012), we get a palindrome (2284884822).

The spelling of 2101803810 in words is "two billion, one hundred one million, eight hundred three thousand, eight hundred ten".