2557890379 has 16 divisors (see below), whose sum is σ = 2804866560. Its totient is φ = 2313360000.

The previous prime is 2557890341. The next prime is 2557890443. The reversal of 2557890379 is 9730987552.

It is a cyclic number.

It is not a de Polignac number, because 2557890379 - 2¹⁷ = 2557759307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2557890079) 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 15 ways as a sum of consecutive naturals, for example, 2782882 + ... + 2783800.

It is an arithmetic number, because the mean of its divisors is an integer number (175304160).

Almost surely, 2^2557890379 is an apocalyptic number.

2557890379 is a deficient number, since it is larger than the sum of its proper divisors (246976181).

2557890379 is a wasteful number, since it uses less digits than its factorization.

2557890379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1962.

The product of its (nonzero) digits is 4762800, while the sum is 55.

The square root of 2557890379 is about 50575.5907429661. The cubic root of 2557890379 is about 1367.6048831186.

The spelling of 2557890379 in words is "two billion, five hundred fifty-seven million, eight hundred ninety thousand, three hundred seventy-nine".