378727911 has 6 divisors (see below), whose sum is σ = 547051440. Its totient is φ = 252485268.

The previous prime is 378727901. The next prime is 378727919. The reversal of 378727911 is 119727873.

378727911 is a `hidden beast` number, since 378 + 7 + 279 + 1 + 1 = 666.

It is not a de Polignac number, because 378727911 - 2⁶ = 378727847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378727919) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21040431 + ... + 21040448.

It is an arithmetic number, because the mean of its divisors is an integer number (91175240).

Almost surely, 2^378727911 is an apocalyptic number.

378727911 is a deficient number, since it is larger than the sum of its proper divisors (168323529).

378727911 is a wasteful number, since it uses less digits than its factorization.

378727911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42080885 (or 42080882 counting only the distinct ones).

The product of its digits is 148176, while the sum is 45.

The square root of 378727911 is about 19460.9329426932. The cubic root of 378727911 is about 723.5065004549.

The spelling of 378727911 in words is "three hundred seventy-eight million, seven hundred twenty-seven thousand, nine hundred eleven".