2642944805 has 8 divisors (see below), whose sum is σ = 3189057144. Its totient is φ = 2102673600.

The previous prime is 2642944771. The next prime is 2642944849. The reversal of 2642944805 is 5084492462.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 45819361 + 2597125444 = 6769^2 + 50962^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2642944805 - 2¹² = 2642940709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1459286 + ... + 1461095.

It is an arithmetic number, because the mean of its divisors is an integer number (398632143).

Almost surely, 2^2642944805 is an apocalyptic number.

It is an amenable number.

2642944805 is a deficient number, since it is larger than the sum of its proper divisors (546112339).

2642944805 is a wasteful number, since it uses less digits than its factorization.

2642944805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2920567.

The product of its (nonzero) digits is 552960, while the sum is 44.

The square root of 2642944805 is about 51409.5789226094. The cubic root of 2642944805 is about 1382.5983401211.

The spelling of 2642944805 in words is "two billion, six hundred forty-two million, nine hundred forty-four thousand, eight hundred five".