2649932821 has 8 divisors (see below), whose sum is σ = 2675546720. Its totient is φ = 2624429808.

The previous prime is 2649932819. The next prime is 2649932827. The reversal of 2649932821 is 1282399462.

2649932821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2649932821 - 2¹ = 2649932819 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2649932827) 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, 20710 + ... + 75688.

It is an arithmetic number, because the mean of its divisors is an integer number (334443340).

Almost surely, 2^2649932821 is an apocalyptic number.

It is an amenable number.

2649932821 is a deficient number, since it is larger than the sum of its proper divisors (25613899).

2649932821 is a wasteful number, since it uses less digits than its factorization.

2649932821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55443.

The product of its digits is 373248, while the sum is 46.

The square root of 2649932821 is about 51477.4982006702. The cubic root of 2649932821 is about 1383.8158099421.

It can be divided in two parts, 2649932 and 821, that added together give a triangular number (2650753 = T₂₃₀₂).

The spelling of 2649932821 in words is "two billion, six hundred forty-nine million, nine hundred thirty-two thousand, eight hundred twenty-one".