2581938823 has 8 divisors (see below), whose sum is σ = 2730022400. Its totient is φ = 2435074488.

The previous prime is 2581938809. The next prime is 2581938841. The reversal of 2581938823 is 3288391852.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2581938823 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 (2581938893) 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, 300453 + ... + 308926.

It is an arithmetic number, because the mean of its divisors is an integer number (341252800).

Almost surely, 2^2581938823 is an apocalyptic number.

2581938823 is a deficient number, since it is larger than the sum of its proper divisors (148083577).

2581938823 is a wasteful number, since it uses less digits than its factorization.

2581938823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609621.

The product of its digits is 829440, while the sum is 49.

The square root of 2581938823 is about 50812.7820828579. The cubic root of 2581938823 is about 1371.8774449812.

The spelling of 2581938823 in words is "two billion, five hundred eighty-one million, nine hundred thirty-eight thousand, eight hundred twenty-three".