2644046881 has 8 divisors (see below), whose sum is σ = 3078782784. Its totient is φ = 2223564720.

The previous prime is 2644046863. The next prime is 2644046959. The reversal of 2644046881 is 1886404462.

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

It is a cyclic number.

It is not a de Polignac number, because 2644046881 - 2¹⁷ = 2643915809 is a prime.

It is a super-2 number, since 2×2644046881² = 13981967817851656322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2644046831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3563035 + ... + 3563776.

It is an arithmetic number, because the mean of its divisors is an integer number (384847848).

Almost surely, 2^2644046881 is an apocalyptic number.

It is an amenable number.

2644046881 is a deficient number, since it is larger than the sum of its proper divisors (434735903).

2644046881 is an equidigital number, since it uses as much as digits as its factorization.

2644046881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7126871.

The product of its (nonzero) digits is 294912, while the sum is 43.

The square root of 2644046881 is about 51420.2963916001. The cubic root of 2644046881 is about 1382.7904890078.

The spelling of 2644046881 in words is "two billion, six hundred forty-four million, forty-six thousand, eight hundred eighty-one".