2928318997 has 4 divisors (see below), whose sum is σ = 2932188076. Its totient is φ = 2924449920.

The previous prime is 2928318971. The next prime is 2928319019. The reversal of 2928318997 is 7998138292.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2511914161 + 416404836 = 50119^2 + 20406^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2928318997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2928318937) 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, 1933404 + ... + 1934917.

It is an arithmetic number, because the mean of its divisors is an integer number (733047019).

Almost surely, 2^2928318997 is an apocalyptic number.

It is an amenable number.

2928318997 is a deficient number, since it is larger than the sum of its proper divisors (3869079).

2928318997 is an equidigital number, since it uses as much as digits as its factorization.

2928318997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3869078.

The product of its digits is 3919104, while the sum is 58.

The square root of 2928318997 is about 54113.9445706927. The cubic root of 2928318997 is about 1430.6699709986.

The spelling of 2928318997 in words is "two billion, nine hundred twenty-eight million, three hundred eighteen thousand, nine hundred ninety-seven".