2640813441 has 16 divisors (see below), whose sum is σ = 4025879424. Its totient is φ = 1508367744.

The previous prime is 2640813421. The next prime is 2640813449. The reversal of 2640813441 is 1443180462.

It is a de Polignac number, because none of the positive numbers 2^k-2640813441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2640813449) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 22821 + ... + 76173.

It is an arithmetic number, because the mean of its divisors is an integer number (251617464).

Almost surely, 2^2640813441 is an apocalyptic number.

2640813441 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2640813441 is a deficient number, since it is larger than the sum of its proper divisors (1385065983).

2640813441 is a wasteful number, since it uses less digits than its factorization.

2640813441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55720.

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 2640813441 is about 51388.8454919937. The cubic root of 2640813441 is about 1382.2265814654.

The spelling of 2640813441 in words is "two billion, six hundred forty million, eight hundred thirteen thousand, four hundred forty-one".