378855223 has 2 divisors, whose sum is σ = 378855224. Its totient is φ = 378855222.

The previous prime is 378855209. The next prime is 378855233. The reversal of 378855223 is 322558873.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 378855223 - 2²¹ = 376758071 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 378855223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378855233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189427611 + 189427612.

It is an arithmetic number, because the mean of its divisors is an integer number (189427612).

Almost surely, 2^378855223 is an apocalyptic number.

378855223 is a deficient number, since it is larger than the sum of its proper divisors (1).

378855223 is an equidigital number, since it uses as much as digits as its factorization.

378855223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 403200, while the sum is 43.

The square root of 378855223 is about 19464.2036312817. The cubic root of 378855223 is about 723.5875619396.

The spelling of 378855223 in words is "three hundred seventy-eight million, eight hundred fifty-five thousand, two hundred twenty-three".