378000013 has 2 divisors, whose sum is σ = 378000014. Its totient is φ = 378000012.

The previous prime is 377999929. The next prime is 378000023. The reversal of 378000013 is 310000873.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 377991364 + 8649 = 19442^2 + 93^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-378000013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (378000023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189000006 + 189000007.

It is an arithmetic number, because the mean of its divisors is an integer number (189000007).

Almost surely, 2^378000013 is an apocalyptic number.

It is an amenable number.

378000013 is a deficient number, since it is larger than the sum of its proper divisors (1).

378000013 is an equidigital number, since it uses as much as digits as its factorization.

378000013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 378000013 is about 19442.2224295475. Note that the first 3 decimals coincide. The cubic root of 378000013 is about 723.0426875414.

Adding to 378000013 its reverse (310000873), we get a palindrome (688000886).

The spelling of 378000013 in words is "three hundred seventy-eight million, thirteen", and thus it is an aban number.