2638252886 has 4 divisors (see below), whose sum is σ = 3957379332. Its totient is φ = 1319126442.

The previous prime is 2638252829. The next prime is 2638252889. The reversal of 2638252886 is 6882528362.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2638252889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659563220 + ... + 659563223.

It is an arithmetic number, because the mean of its divisors is an integer number (989344833).

Almost surely, 2^2638252886 is an apocalyptic number.

2638252886 is a deficient number, since it is larger than the sum of its proper divisors (1319126446).

2638252886 is a wasteful number, since it uses less digits than its factorization.

2638252886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319126445.

The product of its digits is 2211840, while the sum is 50.

The square root of 2638252886 is about 51363.9259208250. The cubic root of 2638252886 is about 1381.7796974805.

The spelling of 2638252886 in words is "two billion, six hundred thirty-eight million, two hundred fifty-two thousand, eight hundred eighty-six".