378223445 has 8 divisors (see below), whose sum is σ = 455418936. Its totient is φ = 301544896.

The previous prime is 378223427. The next prime is 378223457. The reversal of 378223445 is 544322873.

It can be written as a sum of positive squares in 4 ways, for example, as 57168721 + 321054724 = 7561^2 + 17918^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 378223445 - 2⁸ = 378223189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 378223399 and 378223408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127622 + ... + 130551.

It is an arithmetic number, because the mean of its divisors is an integer number (56927367).

Almost surely, 2^378223445 is an apocalyptic number.

It is an amenable number.

378223445 is a deficient number, since it is larger than the sum of its proper divisors (77195491).

378223445 is a wasteful number, since it uses less digits than its factorization.

378223445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258471.

The product of its digits is 161280, while the sum is 38.

The square root of 378223445 is about 19447.9676316061. The cubic root of 378223445 is about 723.1851205646.

The spelling of 378223445 in words is "three hundred seventy-eight million, two hundred twenty-three thousand, four hundred forty-five".