378228474397 has 2 divisors, whose sum is σ = 378228474398. Its totient is φ = 378228474396.

The previous prime is 378228474389. The next prime is 378228474401. The reversal of 378228474397 is 793474822873.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 250194037636 + 128034436761 = 500194^2 + 357819^2 .

It is a cyclic number.

It is not a de Polignac number, because 378228474397 - 2³ = 378228474389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378228474347) 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 as a sum of consecutive naturals, namely, 189114237198 + 189114237199.

It is an arithmetic number, because the mean of its divisors is an integer number (189114237199).

Almost surely, 2^378228474397 is an apocalyptic number.

It is an amenable number.

378228474397 is a deficient number, since it is larger than the sum of its proper divisors (1).

378228474397 is an equidigital number, since it uses as much as digits as its factorization.

378228474397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 113799168, while the sum is 64.

The spelling of 378228474397 in words is "three hundred seventy-eight billion, two hundred twenty-eight million, four hundred seventy-four thousand, three hundred ninety-seven".