2643442385 has 32 divisors (see below), whose sum is σ = 3375820800. Its totient is φ = 1984020480.

The previous prime is 2643442379. The next prime is 2643442409. The reversal of 2643442385 is 5832443462.

It is not a de Polignac number, because 2643442385 - 2¹⁶ = 2643376849 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 792401 + ... + 795729.

It is an arithmetic number, because the mean of its divisors is an integer number (105494400).

Almost surely, 2^2643442385 is an apocalyptic number.

It is an amenable number.

2643442385 is a deficient number, since it is larger than the sum of its proper divisors (732378415).

2643442385 is a wasteful number, since it uses less digits than its factorization.

2643442385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3521.

The product of its digits is 552960, while the sum is 41.

The square root of 2643442385 is about 51414.4180653637. The cubic root of 2643442385 is about 1382.6851006811.

The spelling of 2643442385 in words is "two billion, six hundred forty-three million, four hundred forty-two thousand, three hundred eighty-five".