2057188678 has 16 divisors (see below), whose sum is σ = 3306975840. Its totient is φ = 957280896.

The previous prime is 2057188669. The next prime is 2057188711. The reversal of 2057188678 is 8768817502.

It is a happy number.

It is a super-3 number, since 3×2057188678³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 602643 + ... + 606046.

It is an arithmetic number, because the mean of its divisors is an integer number (206685990).

Almost surely, 2^2057188678 is an apocalyptic number.

2057188678 is a deficient number, since it is larger than the sum of its proper divisors (1249787162).

2057188678 is a wasteful number, since it uses less digits than its factorization.

2057188678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1208751.

The product of its (nonzero) digits is 1505280, while the sum is 52.

The square root of 2057188678 is about 45356.2418857647. The cubic root of 2057188678 is about 1271.8172422286.

The spelling of 2057188678 in words is "two billion, fifty-seven million, one hundred eighty-eight thousand, six hundred seventy-eight".