379816778 has 16 divisors (see below), whose sum is σ = 621907200. Its totient is φ = 172536000.

The previous prime is 379816777. The next prime is 379816817. The reversal of 379816778 is 877618973.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (379816777) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38498 + ... + 47346.

It is an arithmetic number, because the mean of its divisors is an integer number (38869200).

Almost surely, 2^379816778 is an apocalyptic number.

379816778 is a deficient number, since it is larger than the sum of its proper divisors (242090422).

379816778 is a wasteful number, since it uses less digits than its factorization.

379816778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10813.

The product of its digits is 3556224, while the sum is 56.

The square root of 379816778 is about 19488.8885778538. Note that the first 3 decimals coincide. The cubic root of 379816778 is about 724.1992128564.

The spelling of 379816778 in words is "three hundred seventy-nine million, eight hundred sixteen thousand, seven hundred seventy-eight".