1378373 has 2 divisors, whose sum is σ = 1378374. Its totient is φ = 1378372.

The previous prime is 1378339. The next prime is 1378387. The reversal of 1378373 is 3738731.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 925444 + 452929 = 962^2 + 673^2 .

It is a cyclic number.

It is not a de Polignac number, because 1378373 - 2¹⁰ = 1377349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1378073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 689186 + 689187.

It is an arithmetic number, because the mean of its divisors is an integer number (689187).

2^1378373 is an apocalyptic number.

It is an amenable number.

1378373 is a deficient number, since it is larger than the sum of its proper divisors (1).

1378373 is an equidigital number, since it uses as much as digits as its factorization.

1378373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10584, while the sum is 32.

The square root of 1378373 is about 1174.0413110279. The cubic root of 1378373 is about 111.2898573679.

The spelling of 1378373 in words is "one million, three hundred seventy-eight thousand, three hundred seventy-three".