2587441638 has 16 divisors (see below), whose sum is σ = 5245772976. Its totient is φ = 850665600.

The previous prime is 2587441631. The next prime is 2587441643. The reversal of 2587441638 is 8361447852.

It is a super-2 number, since 2×2587441638² = 13389708460112246088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2587441631) 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 7 ways as a sum of consecutive naturals, for example, 2953263 + ... + 2954138.

It is an arithmetic number, because the mean of its divisors is an integer number (327860811).

Almost surely, 2^2587441638 is an apocalyptic number.

2587441638 is an abundant number, since it is smaller than the sum of its proper divisors (2658331338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2587441638 is a wasteful number, since it uses less digits than its factorization.

2587441638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5907479.

The product of its digits is 1290240, while the sum is 48.

The square root of 2587441638 is about 50866.9012030416. The cubic root of 2587441638 is about 1372.8513682634.

The spelling of 2587441638 in words is "two billion, five hundred eighty-seven million, four hundred forty-one thousand, six hundred thirty-eight".