2580819381 has 32 divisors (see below), whose sum is σ = 4599628800. Its totient is φ = 1397133360.

The previous prime is 2580819377. The next prime is 2580819383. The reversal of 2580819381 is 1839180852.

It is a happy number.

2580819381 is a `hidden beast` number, since 258 + 0 + 8 + 19 + 381 = 666.

It is not a de Polignac number, because 2580819381 - 2² = 2580819377 is a prime.

It is a super-2 number, since 2×2580819381² = 13321257354690446322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2580819383) 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 31 ways as a sum of consecutive naturals, for example, 355755 + ... + 362936.

It is an arithmetic number, because the mean of its divisors is an integer number (143738400).

Almost surely, 2^2580819381 is an apocalyptic number.

2580819381 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2580819381 is a deficient number, since it is larger than the sum of its proper divisors (2018809419).

2580819381 is a wasteful number, since it uses less digits than its factorization.

2580819381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718726 (or 718720 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 45.

The square root of 2580819381 is about 50801.7655303435. The cubic root of 2580819381 is about 1371.6791496513.

The spelling of 2580819381 in words is "two billion, five hundred eighty million, eight hundred nineteen thousand, three hundred eighty-one".