378636043 has 2 divisors, whose sum is σ = 378636044. Its totient is φ = 378636042.

The previous prime is 378636031. The next prime is 378636067. The reversal of 378636043 is 340636873.

It is a weak prime.

It is an emirp because it is prime and its reverse (340636873) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-378636043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 378635987 and 378636005.

It is not a weakly prime, because it can be changed into another prime (378636023) 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, 189318021 + 189318022.

It is an arithmetic number, because the mean of its divisors is an integer number (189318022).

Almost surely, 2^378636043 is an apocalyptic number.

378636043 is a deficient number, since it is larger than the sum of its proper divisors (1).

378636043 is an equidigital number, since it uses as much as digits as its factorization.

378636043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 40.

The square root of 378636043 is about 19458.5724810429. The cubic root of 378636043 is about 723.4479954189.

The spelling of 378636043 in words is "three hundred seventy-eight million, six hundred thirty-six thousand, forty-three".