1378433347 has 2 divisors, whose sum is σ = 1378433348. Its totient is φ = 1378433346.

The previous prime is 1378433339. The next prime is 1378433363. The reversal of 1378433347 is 7433348731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1378433347 - 2³ = 1378433339 is a prime.

It is not a weakly prime, because it can be changed into another prime (1378443347) 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, 689216673 + 689216674.

It is an arithmetic number, because the mean of its divisors is an integer number (689216674).

Almost surely, 2^1378433347 is an apocalyptic number.

1378433347 is a deficient number, since it is larger than the sum of its proper divisors (1).

1378433347 is an equidigital number, since it uses as much as digits as its factorization.

1378433347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 508032, while the sum is 43.

The square root of 1378433347 is about 37127.2588134379. The cubic root of 1378433347 is about 1112.9148148340.

The spelling of 1378433347 in words is "one billion, three hundred seventy-eight million, four hundred thirty-three thousand, three hundred forty-seven".