9813444901 has 8 divisors (see below), whose sum is σ = 10587306744. Its totient is φ = 9042294720.

The previous prime is 9813444899. The next prime is 9813444913. The reversal of 9813444901 is 1094443189.

It can be written as a sum of positive squares in 4 ways, for example, as 356076900 + 9457368001 = 18870^2 + 97249^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9813444901 - 2¹ = 9813444899 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9843444901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 670390 + ... + 684871.

It is an arithmetic number, because the mean of its divisors is an integer number (1323413343).

Almost surely, 2^9813444901 is an apocalyptic number.

It is an amenable number.

9813444901 is a deficient number, since it is larger than the sum of its proper divisors (773861843).

9813444901 is a wasteful number, since it uses less digits than its factorization.

9813444901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355831.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 9813444901 is about 99062.8330959700. The cubic root of 9813444901 is about 2140.9531449369.

The spelling of 9813444901 in words is "nine billion, eight hundred thirteen million, four hundred forty-four thousand, nine hundred one".