9805201109 has 4 divisors (see below), whose sum is σ = 10696583040. Its totient is φ = 8913819180.

The previous prime is 9805201039. The next prime is 9805201117. The reversal of 9805201109 is 9011025089.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9805201109 is a prime.

It is a super-2 number, since 2×9805201109² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9805201709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 445690949 + ... + 445690970.

It is an arithmetic number, because the mean of its divisors is an integer number (2674145760).

Almost surely, 2^9805201109 is an apocalyptic number.

It is an amenable number.

9805201109 is a deficient number, since it is larger than the sum of its proper divisors (891381931).

9805201109 is a wasteful number, since it uses less digits than its factorization.

9805201109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891381930.

The product of its (nonzero) digits is 6480, while the sum is 35.

The square root of 9805201109 is about 99021.2154490138. The cubic root of 9805201109 is about 2140.3534738708.

The spelling of 9805201109 in words is "nine billion, eight hundred five million, two hundred one thousand, one hundred nine".