2638872005 has 96 divisors (see below), whose sum is σ = 4313993472. Its totient is φ = 1504051200.

The previous prime is 2638871999. The next prime is 2638872007. The reversal of 2638872005 is 5002788362.

It is not a de Polignac number, because 2638872005 - 2¹⁰ = 2638870981 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 (2638872007) 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 95 ways as a sum of consecutive naturals, for example, 4116485 + ... + 4117125.

It is an arithmetic number, because the mean of its divisors is an integer number (44937432).

Almost surely, 2^2638872005 is an apocalyptic number.

It is an amenable number.

2638872005 is a deficient number, since it is larger than the sum of its proper divisors (1675121467).

2638872005 is a wasteful number, since it uses less digits than its factorization.

2638872005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735 (or 718 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 2638872005 is about 51369.9523554383. The cubic root of 2638872005 is about 1381.8877764746.

The spelling of 2638872005 in words is "two billion, six hundred thirty-eight million, eight hundred seventy-two thousand, five".