2057937778 has 8 divisors (see below), whose sum is σ = 3324361068. Its totient is φ = 949817424.

The previous prime is 2057937733. The next prime is 2057937793. The reversal of 2057937778 is 8777397502.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2030133249 + 27804529 = 45057^2 + 5273^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 39575701 + ... + 39575752.

Almost surely, 2^2057937778 is an apocalyptic number.

2057937778 is a deficient number, since it is larger than the sum of its proper divisors (1266423290).

2057937778 is a wasteful number, since it uses less digits than its factorization.

2057937778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79151468.

The product of its (nonzero) digits is 5186160, while the sum is 55.

The square root of 2057937778 is about 45364.4990934541. The cubic root of 2057937778 is about 1271.9715957062.

The spelling of 2057937778 in words is "two billion, fifty-seven million, nine hundred thirty-seven thousand, seven hundred seventy-eight".