2645908579 has 4 divisors (see below), whose sum is σ = 2682153976. Its totient is φ = 2609663184.

The previous prime is 2645908571. The next prime is 2645908589. The reversal of 2645908579 is 9758095462.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9758095462 = 2 ⋅4879047731.

It is a cyclic number.

It is not a de Polignac number, because 2645908579 - 2³ = 2645908571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2645908571) 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, 18122589 + ... + 18122734.

It is an arithmetic number, because the mean of its divisors is an integer number (670538494).

Almost surely, 2^2645908579 is an apocalyptic number.

2645908579 is a deficient number, since it is larger than the sum of its proper divisors (36245397).

2645908579 is an equidigital number, since it uses as much as digits as its factorization.

2645908579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36245396.

The product of its (nonzero) digits is 5443200, while the sum is 55.

The square root of 2645908579 is about 51438.3959606051. The cubic root of 2645908579 is about 1383.1149580805.

The spelling of 2645908579 in words is "two billion, six hundred forty-five million, nine hundred eight thousand, five hundred seventy-nine".