378444013 has 2 divisors, whose sum is σ = 378444014. Its totient is φ = 378444012.

The previous prime is 378443999. The next prime is 378444037. The reversal of 378444013 is 310444873.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 214271044 + 164172969 = 14638^2 + 12813^2 .

It is a cyclic number.

It is not a de Polignac number, because 378444013 - 2¹³ = 378435821 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 378444013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378444613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189222006 + 189222007.

It is an arithmetic number, because the mean of its divisors is an integer number (189222007).

Almost surely, 2^378444013 is an apocalyptic number.

It is an amenable number.

378444013 is a deficient number, since it is larger than the sum of its proper divisors (1).

378444013 is an equidigital number, since it uses as much as digits as its factorization.

378444013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 378444013 is about 19453.6375261800. The cubic root of 378444013 is about 723.3256728408.

Adding to 378444013 its reverse (310444873), we get a palindrome (688888886).

The spelling of 378444013 in words is "three hundred seventy-eight million, four hundred forty-four thousand, thirteen".