378743345 has 8 divisors (see below), whose sum is σ = 460718376. Its totient is φ = 298843776.

The previous prime is 378743317. The next prime is 378743389. The reversal of 378743345 is 543347873.

It can be written as a sum of positive squares in 4 ways, for example, as 153983281 + 224760064 = 12409^2 + 14992^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-378743345 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 378743296 and 378743305.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 518462 + ... + 519191.

It is an arithmetic number, because the mean of its divisors is an integer number (57589797).

Almost surely, 2^378743345 is an apocalyptic number.

It is an amenable number.

378743345 is a deficient number, since it is larger than the sum of its proper divisors (81975031).

378743345 is a wasteful number, since it uses less digits than its factorization.

378743345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037731.

The product of its digits is 846720, while the sum is 44.

The square root of 378743345 is about 19461.3294766827. The cubic root of 378743345 is about 723.5163284848.

The spelling of 378743345 in words is "three hundred seventy-eight million, seven hundred forty-three thousand, three hundred forty-five".