2620518481 has 27 divisors (see below), whose sum is σ = 3122207433. Its totient is φ = 2193022440.

The previous prime is 2620518479. The next prime is 2620518487. The reversal of 2620518481 is 1848150262.

The square root of 2620518481 is 51191.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 2620518481 - 2¹ = 2620518479 is a prime.

It is a super-2 number, since 2×2620518481² = 13734234218525094722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2620518481.

It is not an unprimeable number, because it can be changed into a prime (2620518487) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 25441876 + ... + 25441978.

Almost surely, 2^2620518481 is an apocalyptic number.

2620518481 is the 51191-st square number.

2620518481 is the 25596-th centered octagonal number.

It is an amenable number.

2620518481 is a deficient number, since it is larger than the sum of its proper divisors (501688952).

2620518481 is an frugal number, since it uses more digits than its factorization.

2620518481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362 (or 181 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 37.

The cubic root of 2620518481 is about 1378.6766142844.

The spelling of 2620518481 in words is "two billion, six hundred twenty million, five hundred eighteen thousand, four hundred eighty-one".