378819793 has 4 divisors (see below), whose sum is σ = 413257968. Its totient is φ = 344381620.

The previous prime is 378819767. The next prime is 378819797. The reversal of 378819793 is 397918873.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-378819793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378819797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17219071 + ... + 17219092.

It is an arithmetic number, because the mean of its divisors is an integer number (103314492).

Almost surely, 2^378819793 is an apocalyptic number.

It is an amenable number.

378819793 is a deficient number, since it is larger than the sum of its proper divisors (34438175).

378819793 is a wasteful number, since it uses less digits than its factorization.

378819793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34438174.

The product of its digits is 2286144, while the sum is 55.

The square root of 378819793 is about 19463.2934777237. The cubic root of 378819793 is about 723.5650049442.

It can be divided in two parts, 37881 and 9793, that added together give a palindrome (47674).

The spelling of 378819793 in words is "three hundred seventy-eight million, eight hundred nineteen thousand, seven hundred ninety-three".