2581493359 has 2 divisors, whose sum is σ = 2581493360. Its totient is φ = 2581493358.

The previous prime is 2581493351. The next prime is 2581493399. The reversal of 2581493359 is 9533941852.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2581493359 - 2³ = 2581493351 is a prime.

It is a super-2 number, since 2×2581493359² = 13328215925122205762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2581493351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1290746679 + 1290746680.

It is an arithmetic number, because the mean of its divisors is an integer number (1290746680).

Almost surely, 2^2581493359 is an apocalyptic number.

2581493359 is a deficient number, since it is larger than the sum of its proper divisors (1).

2581493359 is an equidigital number, since it uses as much as digits as its factorization.

2581493359 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1166400, while the sum is 49.

The square root of 2581493359 is about 50808.3985085143. The cubic root of 2581493359 is about 1371.7985434005.

It can be divided in two parts, 2581493 and 359, that added together give a palindrome (2581852).

The spelling of 2581493359 in words is "two billion, five hundred eighty-one million, four hundred ninety-three thousand, three hundred fifty-nine".