9928145371 has 4 divisors (see below), whose sum is σ = 10006319872. Its totient is φ = 9849970872.

The previous prime is 9928145329. The next prime is 9928145377. The reversal of 9928145371 is 1735418299.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9928145371 - 2⁹ = 9928144859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9928145377) 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, 39087060 + ... + 39087313.

It is an arithmetic number, because the mean of its divisors is an integer number (2501579968).

Almost surely, 2^9928145371 is an apocalyptic number.

9928145371 is a deficient number, since it is larger than the sum of its proper divisors (78174501).

9928145371 is a wasteful number, since it uses less digits than its factorization.

9928145371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78174500.

The product of its digits is 544320, while the sum is 49.

The square root of 9928145371 is about 99640.0791398722. The cubic root of 9928145371 is about 2149.2620774606.

The spelling of 9928145371 in words is "nine billion, nine hundred twenty-eight million, one hundred forty-five thousand, three hundred seventy-one".