9945652361 has 4 divisors (see below), whose sum is σ = 10114222800. Its totient is φ = 9777081924.

The previous prime is 9945652357. The next prime is 9945652369. The reversal of 9945652361 is 1632565499.

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 not a de Polignac number, because 9945652361 - 2² = 9945652357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9945652369) 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, 84285131 + ... + 84285248.

It is an arithmetic number, because the mean of its divisors is an integer number (2528555700).

Almost surely, 2^9945652361 is an apocalyptic number.

It is an amenable number.

9945652361 is a deficient number, since it is larger than the sum of its proper divisors (168570439).

9945652361 is a wasteful number, since it uses less digits than its factorization.

9945652361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168570438.

The product of its digits is 1749600, while the sum is 50.

The square root of 9945652361 is about 99727.8915900662. The cubic root of 9945652361 is about 2150.5246501131.

The spelling of 9945652361 in words is "nine billion, nine hundred forty-five million, six hundred fifty-two thousand, three hundred sixty-one".