2731659645 has 128 divisors (see below), whose sum is σ = 5334336000. Its totient is φ = 1175961600.

The previous prime is 2731659631. The next prime is 2731659731. The reversal of 2731659645 is 5469561372.

It is not a de Polignac number, because 2731659645 - 2⁴ = 2731659629 is a prime.

It is a super-2 number, since 2×2731659645² = 14923928832243052050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2731659594 and 2731659603.

It is a congruent number.

It is an unprimeable number.

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 127 ways as a sum of consecutive naturals, for example, 7826931 + ... + 7827279.

It is an arithmetic number, because the mean of its divisors is an integer number (41674500).

Almost surely, 2^2731659645 is an apocalyptic number.

It is an amenable number.

2731659645 is a deficient number, since it is larger than the sum of its proper divisors (2602676355).

2731659645 is a wasteful number, since it uses less digits than its factorization.

2731659645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511.

The product of its digits is 1360800, while the sum is 48.

The square root of 2731659645 is about 52265.2814495435. The cubic root of 2731659645 is about 1397.8981461853.

The spelling of 2731659645 in words is "two billion, seven hundred thirty-one million, six hundred fifty-nine thousand, six hundred forty-five".