9928040165 has 16 divisors (see below), whose sum is σ = 12194316288. Its totient is φ = 7755429696.

The previous prime is 9928040147. The next prime is 9928040197. The reversal of 9928040165 is 5610408299.

It is a cyclic number.

It is not a de Polignac number, because 9928040165 - 2²⁸ = 9659604709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1316987 + ... + 1324503.

It is an arithmetic number, because the mean of its divisors is an integer number (762144768).

Almost surely, 2^9928040165 is an apocalyptic number.

It is an amenable number.

9928040165 is a deficient number, since it is larger than the sum of its proper divisors (2266276123).

9928040165 is a wasteful number, since it uses less digits than its factorization.

9928040165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13708.

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 9928040165 is about 99639.5512083430. The cubic root of 9928040165 is about 2149.2544857082.

The spelling of 9928040165 in words is "nine billion, nine hundred twenty-eight million, forty thousand, one hundred sixty-five".