9864198253 has 20 divisors (see below), whose sum is σ = 12213031520. Its totient is φ = 7804482192.

The previous prime is 9864198221. The next prime is 9864198257. The reversal of 9864198253 is 3528914689.

It is not a de Polignac number, because 9864198253 - 2⁵ = 9864198221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9864198194 and 9864198203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9864198257) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 175258 + ... + 224596.

It is an arithmetic number, because the mean of its divisors is an integer number (610651576).

Almost surely, 2^9864198253 is an apocalyptic number.

It is an amenable number.

9864198253 is a deficient number, since it is larger than the sum of its proper divisors (2348833267).

9864198253 is an frugal number, since it uses more digits than its factorization.

9864198253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49398 (or 49359 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 55.

The square root of 9864198253 is about 99318.6702136109. The cubic root of 9864198253 is about 2144.6376737255.

The spelling of 9864198253 in words is "nine billion, eight hundred sixty-four million, one hundred ninety-eight thousand, two hundred fifty-three".