9901649053 has 4 divisors (see below), whose sum is σ = 9992489980. Its totient is φ = 9810808128.

The previous prime is 9901649047. The next prime is 9901649057. The reversal of 9901649053 is 3509461099.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3509461099 = 4177 ⋅840187.

It can be written as a sum of positive squares in 2 ways, for example, as 7990035769 + 1911613284 = 89387^2 + 43722^2 .

It is a cyclic number.

It is not a de Polignac number, because 9901649053 - 2¹⁷ = 9901517981 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9901648994 and 9901649012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9901649057) 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, 45420300 + ... + 45420517.

It is an arithmetic number, because the mean of its divisors is an integer number (2498122495).

Almost surely, 2^9901649053 is an apocalyptic number.

It is an amenable number.

9901649053 is a deficient number, since it is larger than the sum of its proper divisors (90840927).

9901649053 is a wasteful number, since it uses less digits than its factorization.

9901649053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90840926.

The product of its (nonzero) digits is 262440, while the sum is 46.

The square root of 9901649053 is about 99507.0301687273. The cubic root of 9901649053 is about 2147.3483844438.

The spelling of 9901649053 in words is "nine billion, nine hundred one million, six hundred forty-nine thousand, fifty-three".