2656419843 has 24 divisors (see below), whose sum is σ = 4449324544. Its totient is φ = 1379957040.

The previous prime is 2656419841. The next prime is 2656419869. The reversal of 2656419843 is 3489146562.

It is not a de Polignac number, because 2656419843 - 2¹ = 2656419841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2656419792 and 2656419801.

It is not an unprimeable number, because it can be changed into a prime (2656419841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 520171 + ... + 525252.

Almost surely, 2^2656419843 is an apocalyptic number.

2656419843 is a deficient number, since it is larger than the sum of its proper divisors (1792904701).

2656419843 is a wasteful number, since it uses less digits than its factorization.

2656419843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045455 (or 1045444 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 48.

The square root of 2656419843 is about 51540.4680130090. The cubic root of 2656419843 is about 1384.9440811180.

The spelling of 2656419843 in words is "two billion, six hundred fifty-six million, four hundred nineteen thousand, eight hundred forty-three".