2518341021 has 24 divisors (see below), whose sum is σ = 4159856064. Its totient is φ = 1438153920.

The previous prime is 2518341013. The next prime is 2518341061. The reversal of 2518341021 is 1201438152.

It is not a de Polignac number, because 2518341021 - 2³ = 2518341013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2518341061) 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 23 ways as a sum of consecutive naturals, for example, 96810 + ... + 120036.

It is an arithmetic number, because the mean of its divisors is an integer number (173327336).

Almost surely, 2^2518341021 is an apocalyptic number.

2518341021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2518341021 is a deficient number, since it is larger than the sum of its proper divisors (1641515043).

2518341021 is a wasteful number, since it uses less digits than its factorization.

2518341021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24961 (or 24958 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 2518341021 is about 50183.0750452780. The cubic root of 2518341021 is about 1360.5197373742.

Adding to 2518341021 its reverse (1201438152), we get a palindrome (3719779173).

The spelling of 2518341021 in words is "two billion, five hundred eighteen million, three hundred forty-one thousand, twenty-one".