3878795557 has 36 divisors (see below), whose sum is σ = 4959481536. Its totient is φ = 3022699680.

The previous prime is 3878795549. The next prime is 3878795561. The reversal of 3878795557 is 7555978783.

It is a happy number.

It is not a de Polignac number, because 3878795557 - 2³ = 3878795549 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3878795567) 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 35 ways as a sum of consecutive naturals, for example, 551332 + ... + 558322.

It is an arithmetic number, because the mean of its divisors is an integer number (137763376).

Almost surely, 2^3878795557 is an apocalyptic number.

It is an amenable number.

3878795557 is a deficient number, since it is larger than the sum of its proper divisors (1080685979).

3878795557 is a wasteful number, since it uses less digits than its factorization.

3878795557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7098 (or 7078 counting only the distinct ones).

The product of its digits is 74088000, while the sum is 64.

The square root of 3878795557 is about 62279.9771756541. The cubic root of 3878795557 is about 1571.2029884965.

The spelling of 3878795557 in words is "three billion, eight hundred seventy-eight million, seven hundred ninety-five thousand, five hundred fifty-seven".