2056436867 has 4 divisors (see below), whose sum is σ = 2061465240. Its totient is φ = 2051408496.

The previous prime is 2056436849. The next prime is 2056436869. The reversal of 2056436867 is 7686346502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2056436867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2056436869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2513573 + ... + 2514390.

It is an arithmetic number, because the mean of its divisors is an integer number (515366310).

Almost surely, 2^2056436867 is an apocalyptic number.

2056436867 is a deficient number, since it is larger than the sum of its proper divisors (5028373).

2056436867 is an equidigital number, since it uses as much as digits as its factorization.

2056436867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5028372.

The product of its (nonzero) digits is 1451520, while the sum is 47.

The square root of 2056436867 is about 45347.9532834725. The cubic root of 2056436867 is about 1271.6622924655.

The spelling of 2056436867 in words is "two billion, fifty-six million, four hundred thirty-six thousand, eight hundred sixty-seven".