9729163253 has 4 divisors (see below), whose sum is σ = 9729416268. Its totient is φ = 9728910240.

The previous prime is 9729163177. The next prime is 9729163259. The reversal of 9729163253 is 3523619279.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3523619279 = 1663 ⋅2118833.

It can be written as a sum of positive squares in 2 ways, for example, as 6202822564 + 3526340689 = 78758^2 + 59383^2 .

It is a cyclic number.

It is not a de Polignac number, because 9729163253 - 2⁸ = 9729162997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 9729163198 and 9729163207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9729163259) 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, 55568 + ... + 150153.

It is an arithmetic number, because the mean of its divisors is an integer number (2432354067).

Almost surely, 2^9729163253 is an apocalyptic number.

It is an amenable number.

9729163253 is a deficient number, since it is larger than the sum of its proper divisors (253015).

9729163253 is a wasteful number, since it uses less digits than its factorization.

9729163253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253014.

The product of its digits is 612360, while the sum is 47.

The square root of 9729163253 is about 98636.5208885634. The cubic root of 9729163253 is about 2134.8064040244.

The spelling of 9729163253 in words is "nine billion, seven hundred twenty-nine million, one hundred sixty-three thousand, two hundred fifty-three".