378779764 has 48 divisors (see below), whose sum is σ = 749528640. Its totient is φ = 166000640.

The previous prime is 378779761. The next prime is 378779773. The reversal of 378779764 is 467977873.

It is a junction number, because it is equal to n+sod(n) for n = 378779699 and 378779708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378779761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136212 + ... + 138964.

It is an arithmetic number, because the mean of its divisors is an integer number (15615180).

Almost surely, 2^378779764 is an apocalyptic number.

It is an amenable number.

378779764 is a deficient number, since it is larger than the sum of its proper divisors (370748876).

378779764 is a wasteful number, since it uses less digits than its factorization.

378779764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2880 (or 2878 counting only the distinct ones).

The product of its digits is 12446784, while the sum is 58.

The square root of 378779764 is about 19462.2651302463. The cubic root of 378779764 is about 723.5395182402.

The spelling of 378779764 in words is "three hundred seventy-eight million, seven hundred seventy-nine thousand, seven hundred sixty-four".