2605927081 has 4 divisors (see below), whose sum is σ = 2606093200. Its totient is φ = 2605760964.

The previous prime is 2605927039. The next prime is 2605927111. The reversal of 2605927081 is 1807295062.

2605927081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2605927081 - 2⁹ = 2605926569 is a prime.

It is a super-2 number, since 2×2605927081² = 13581711902978361122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2605927001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56751 + ... + 91828.

It is an arithmetic number, because the mean of its divisors is an integer number (651523300).

Almost surely, 2^2605927081 is an apocalyptic number.

It is an amenable number.

2605927081 is a deficient number, since it is larger than the sum of its proper divisors (166119).

2605927081 is a wasteful number, since it uses less digits than its factorization.

2605927081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166118.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 2605927081 is about 51048.2818613908. The cubic root of 2605927081 is about 1376.1129644123.

The spelling of 2605927081 in words is "two billion, six hundred five million, nine hundred twenty-seven thousand, eighty-one".