2620253881 has 36 divisors (see below), whose sum is σ = 3239828928. Its totient is φ = 2112599664.

The previous prime is 2620253879. The next prime is 2620253929. The reversal of 2620253881 is 1883520262.

It is not a de Polignac number, because 2620253881 - 2¹ = 2620253879 is a prime.

It is a super-2 number, since 2×2620253881² = 13731460801791124322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2620253881.

It is not an unprimeable number, because it can be changed into a prime (2620253821) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2953620 + ... + 2954506.

It is an arithmetic number, because the mean of its divisors is an integer number (89995248).

Almost surely, 2^2620253881 is an apocalyptic number.

It is an amenable number.

2620253881 is a deficient number, since it is larger than the sum of its proper divisors (619575047).

2620253881 is a wasteful number, since it uses less digits than its factorization.

2620253881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1106 (or 1080 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 2620253881 is about 51188.4154960866. The cubic root of 2620253881 is about 1378.6302099674.

The spelling of 2620253881 in words is "two billion, six hundred twenty million, two hundred fifty-three thousand, eight hundred eighty-one".