2558138819 has 4 divisors (see below), whose sum is σ = 2627277744. Its totient is φ = 2488999896.

The previous prime is 2558138783. The next prime is 2558138839. The reversal of 2558138819 is 9188318552.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2558138819 - 2¹² = 2558134723 is a prime.

It is a super-2 number, since 2×2558138819² = 13088148434549429522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2558138839) 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, 34569407 + ... + 34569480.

It is an arithmetic number, because the mean of its divisors is an integer number (656819436).

Almost surely, 2^2558138819 is an apocalyptic number.

2558138819 is a deficient number, since it is larger than the sum of its proper divisors (69138925).

2558138819 is an equidigital number, since it uses as much as digits as its factorization.

2558138819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69138924.

The product of its digits is 691200, while the sum is 50.

The square root of 2558138819 is about 50578.0468088676. The cubic root of 2558138819 is about 1367.6491587660.

The spelling of 2558138819 in words is "two billion, five hundred fifty-eight million, one hundred thirty-eight thousand, eight hundred nineteen".