9920648901 has 8 divisors (see below), whose sum is σ = 13228291584. Its totient is φ = 6613386080.

The previous prime is 9920648891. The next prime is 9920648921. The reversal of 9920648901 is 1098460299.

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 9920648901 - 2²⁹ = 9383777989 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9920648921) 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, 27096 + ... + 143441.

It is an arithmetic number, because the mean of its divisors is an integer number (1653536448).

Almost surely, 2^9920648901 is an apocalyptic number.

It is an amenable number.

9920648901 is a deficient number, since it is larger than the sum of its proper divisors (3307642683).

9920648901 is a wasteful number, since it uses less digits than its factorization.

9920648901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189931.

The product of its (nonzero) digits is 279936, while the sum is 48.

The square root of 9920648901 is about 99602.4542920505. The cubic root of 9920648901 is about 2148.7209916553.

The spelling of 9920648901 in words is "nine billion, nine hundred twenty million, six hundred forty-eight thousand, nine hundred one".