2557538374 has 4 divisors (see below), whose sum is σ = 3836307564. Its totient is φ = 1278769186.

The previous prime is 2557538369. The next prime is 2557538387. The reversal of 2557538374 is 4738357552.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 639384592 + ... + 639384595.

It is an arithmetic number, because the mean of its divisors is an integer number (959076891).

Almost surely, 2^2557538374 is an apocalyptic number.

2557538374 is a deficient number, since it is larger than the sum of its proper divisors (1278769190).

2557538374 is a wasteful number, since it uses less digits than its factorization.

2557538374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278769189.

The product of its digits is 3528000, while the sum is 49.

The square root of 2557538374 is about 50572.1106342221. The cubic root of 2557538374 is about 1367.5421457622.

The spelling of 2557538374 in words is "two billion, five hundred fifty-seven million, five hundred thirty-eight thousand, three hundred seventy-four".