2638834567 has 4 divisors (see below), whose sum is σ = 2654088120. Its totient is φ = 2623581016.

The previous prime is 2638834481. The next prime is 2638834591. The reversal of 2638834567 is 7654388362.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2638834567 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 (2638834267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7626517 + ... + 7626862.

It is an arithmetic number, because the mean of its divisors is an integer number (663522030).

Almost surely, 2^2638834567 is an apocalyptic number.

2638834567 is a deficient number, since it is larger than the sum of its proper divisors (15253553).

2638834567 is a wasteful number, since it uses less digits than its factorization.

2638834567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15253552.

The product of its digits is 5806080, while the sum is 52.

The square root of 2638834567 is about 51369.5879582463. The cubic root of 2638834567 is about 1381.8812414400.

The spelling of 2638834567 in words is "two billion, six hundred thirty-eight million, eight hundred thirty-four thousand, five hundred sixty-seven".