2748326581 has 16 divisors (see below), whose sum is σ = 3690062208. Its totient is φ = 1976817600.

The previous prime is 2748326531. The next prime is 2748326591. The reversal of 2748326581 is 1856238472.

It is a cyclic number.

It is not a de Polignac number, because 2748326581 - 2⁹ = 2748326069 is a prime.

It is a super-2 number, since 2×2748326581² = 15106597991662299122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2748326531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1371790 + ... + 1373791.

It is an arithmetic number, because the mean of its divisors is an integer number (230628888).

Almost surely, 2^2748326581 is an apocalyptic number.

It is an amenable number.

2748326581 is a deficient number, since it is larger than the sum of its proper divisors (941735627).

2748326581 is a wasteful number, since it uses less digits than its factorization.

2748326581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2745612.

The product of its digits is 645120, while the sum is 46.

The square root of 2748326581 is about 52424.4845563597. The cubic root of 2748326581 is about 1400.7354267044.

The spelling of 2748326581 in words is "two billion, seven hundred forty-eight million, three hundred twenty-six thousand, five hundred eighty-one".