2801995563 has 4 divisors (see below), whose sum is σ = 3735994088. Its totient is φ = 1867997040.

The previous prime is 2801995523. The next prime is 2801995571. The reversal of 2801995563 is 3655991082.

It is a happy number.

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

It is not a de Polignac number, because 2801995563 - 2²⁶ = 2734886699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2801995513) 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, 466999258 + ... + 466999263.

It is an arithmetic number, because the mean of its divisors is an integer number (933998522).

Almost surely, 2^2801995563 is an apocalyptic number.

2801995563 is a deficient number, since it is larger than the sum of its proper divisors (933998525).

2801995563 is an equidigital number, since it uses as much as digits as its factorization.

2801995563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933998524.

The product of its (nonzero) digits is 583200, while the sum is 48.

The square root of 2801995563 is about 52933.8791607039. The cubic root of 2801995563 is about 1409.7945080544.

The spelling of 2801995563 in words is "two billion, eight hundred one million, nine hundred ninety-five thousand, five hundred sixty-three".