2808165020 has 24 divisors (see below), whose sum is σ = 5980207968. Its totient is φ = 1107444800.

The previous prime is 2808165011. The next prime is 2808165023. The reversal of 2808165020 is 205618082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2808165023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 987371 + ... + 990210.

It is an arithmetic number, because the mean of its divisors is an integer number (249175332).

Almost surely, 2^2808165020 is an apocalyptic number.

2808165020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2808165020 is an abundant number, since it is smaller than the sum of its proper divisors (3172042948).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2808165020 is a wasteful number, since it uses less digits than its factorization.

2808165020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1977661 (or 1977659 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 2808165020 is about 52992.1222447261. The cubic root of 2808165020 is about 1410.8284486474.

The spelling of 2808165020 in words is "two billion, eight hundred eight million, one hundred sixty-five thousand, twenty".