2638213273 has 4 divisors (see below), whose sum is σ = 2643036880. Its totient is φ = 2633389668.

The previous prime is 2638213267. The next prime is 2638213297. The reversal of 2638213273 is 3723128362.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2638213273 - 2⁹ = 2638212761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2638211273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2410983 + ... + 2412076.

It is an arithmetic number, because the mean of its divisors is an integer number (660759220).

Almost surely, 2^2638213273 is an apocalyptic number.

It is an amenable number.

2638213273 is a deficient number, since it is larger than the sum of its proper divisors (4823607).

2638213273 is an equidigital number, since it uses as much as digits as its factorization.

2638213273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4823606.

The product of its digits is 72576, while the sum is 37.

The square root of 2638213273 is about 51363.5403082770. The cubic root of 2638213273 is about 1381.7727817026.

The spelling of 2638213273 in words is "two billion, six hundred thirty-eight million, two hundred thirteen thousand, two hundred seventy-three".