9649220273 has 16 divisors (see below), whose sum is σ = 12286162944. Its totient is φ = 7358894160.

The previous prime is 9649220263. The next prime is 9649220297. The reversal of 9649220273 is 3720229469.

It is a cyclic number.

It is not a de Polignac number, because 9649220273 - 2¹⁸ = 9648958129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9649220263) 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, 1329515 + ... + 1336752.

It is an arithmetic number, because the mean of its divisors is an integer number (767885184).

Almost surely, 2^9649220273 is an apocalyptic number.

It is an amenable number.

9649220273 is a deficient number, since it is larger than the sum of its proper divisors (2636942671).

9649220273 is a wasteful number, since it uses less digits than its factorization.

9649220273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2666332.

The product of its (nonzero) digits is 326592, while the sum is 44.

The square root of 9649220273 is about 98230.4447358353. Note that the first 3 decimals coincide. The cubic root of 9649220273 is about 2128.9431945151.

It can be divided in two parts, 9649 and 220273, that added together give a palindrome (229922).

The spelling of 9649220273 in words is "nine billion, six hundred forty-nine million, two hundred twenty thousand, two hundred seventy-three".