2646921044 has 12 divisors (see below), whose sum is σ = 4638650100. Its totient is φ = 1321592448.

The previous prime is 2646921041. The next prime is 2646921061. The reversal of 2646921044 is 4401296462.

It can be written as a sum of positive squares in 2 ways, for example, as 1202008900 + 1444912144 = 34670^2 + 38012^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2646920989 and 2646921007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2646921041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 463829 + ... + 469500.

It is an arithmetic number, because the mean of its divisors is an integer number (386554175).

Almost surely, 2^2646921044 is an apocalyptic number.

It is an amenable number.

2646921044 is a deficient number, since it is larger than the sum of its proper divisors (1991729056).

2646921044 is a wasteful number, since it uses less digits than its factorization.

2646921044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934042 (or 934040 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 2646921044 is about 51448.2365489819. The cubic root of 2646921044 is about 1383.2913533042.

The spelling of 2646921044 in words is "two billion, six hundred forty-six million, nine hundred twenty-one thousand, forty-four".