2518827421 has 16 divisors (see below), whose sum is σ = 2781390528. Its totient is φ = 2261952000.

The previous prime is 2518827391. The next prime is 2518827439. The reversal of 2518827421 is 1247288152.

It is a de Polignac number, because none of the positive numbers 2^k-2518827421 is a prime.

It is a super-2 number, since 2×2518827421² = 12688983153563022482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2518827721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 652146 + ... + 655996.

It is an arithmetic number, because the mean of its divisors is an integer number (173836908).

Almost surely, 2^2518827421 is an apocalyptic number.

It is an amenable number.

2518827421 is a deficient number, since it is larger than the sum of its proper divisors (262563107).

2518827421 is a wasteful number, since it uses less digits than its factorization.

2518827421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4572.

The product of its digits is 71680, while the sum is 40.

The square root of 2518827421 is about 50187.9210667268. The cubic root of 2518827421 is about 1360.6073233676.

The spelling of 2518827421 in words is "two billion, five hundred eighteen million, eight hundred twenty-seven thousand, four hundred twenty-one".