2640789833 has 16 divisors (see below), whose sum is σ = 2925901440. Its totient is φ = 2363289600.

The previous prime is 2640789829. The next prime is 2640789847. The reversal of 2640789833 is 3389870462.

It is a cyclic number.

It is not a de Polignac number, because 2640789833 - 2² = 2640789829 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2640786833) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 598391 + ... + 602787.

It is an arithmetic number, because the mean of its divisors is an integer number (182868840).

Almost surely, 2^2640789833 is an apocalyptic number.

It is an amenable number.

2640789833 is a deficient number, since it is larger than the sum of its proper divisors (285111607).

2640789833 is a wasteful number, since it uses less digits than its factorization.

2640789833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5248.

The product of its (nonzero) digits is 1741824, while the sum is 50.

The square root of 2640789833 is about 51388.6157918269. The cubic root of 2640789833 is about 1382.2224625701. Note that the first 3 decimals are identical.

The spelling of 2640789833 in words is "two billion, six hundred forty million, seven hundred eighty-nine thousand, eight hundred thirty-three".