3957877778 has 8 divisors (see below), whose sum is σ = 5944032768. Its totient is φ = 1976533524.

The previous prime is 3957877757. The next prime is 3957877829. The reversal of 3957877778 is 8777787593.

3957877778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1200626 + ... + 1203917.

It is an arithmetic number, because the mean of its divisors is an integer number (743004096).

Almost surely, 2^3957877778 is an apocalyptic number.

3957877778 is a deficient number, since it is larger than the sum of its proper divisors (1986154990).

3957877778 is a wasteful number, since it uses less digits than its factorization.

3957877778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2405368.

The product of its digits is 145212480, while the sum is 68.

The square root of 3957877778 is about 62911.6664697415. Note that the first 3 decimals coincide. The cubic root of 3957877778 is about 1581.8093061031.

The spelling of 3957877778 in words is "three billion, nine hundred fifty-seven million, eight hundred seventy-seven thousand, seven hundred seventy-eight".