9920048738 has 4 divisors (see below), whose sum is σ = 14880073110. Its totient is φ = 4960024368.

The previous prime is 9920048717. The next prime is 9920048771. The reversal of 9920048738 is 8378400299.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8378400299 = 157 ⋅53365607.

It can be written as a sum of positive squares in only one way, i.e., 9585780649 + 334268089 = 97907^2 + 18283^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2480012183 + ... + 2480012186.

Almost surely, 2^9920048738 is an apocalyptic number.

9920048738 is a deficient number, since it is larger than the sum of its proper divisors (4960024372).

9920048738 is a wasteful number, since it uses less digits than its factorization.

9920048738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4960024371.

The product of its (nonzero) digits is 870912, while the sum is 50.

The square root of 9920048738 is about 99599.4414542572. The cubic root of 9920048738 is about 2148.6776608593.

The spelling of 9920048738 in words is "nine billion, nine hundred twenty million, forty-eight thousand, seven hundred thirty-eight".