1378223263 has 2 divisors, whose sum is σ = 1378223264. Its totient is φ = 1378223262.

The previous prime is 1378223219. The next prime is 1378223279. The reversal of 1378223263 is 3623228731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1378223263 - 2⁹ = 1378222751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1378223663) 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, 689111631 + 689111632.

It is an arithmetic number, because the mean of its divisors is an integer number (689111632).

Almost surely, 2^1378223263 is an apocalyptic number.

1378223263 is a deficient number, since it is larger than the sum of its proper divisors (1).

1378223263 is an equidigital number, since it uses as much as digits as its factorization.

1378223263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 37.

The square root of 1378223263 is about 37124.4294636295. The cubic root of 1378223263 is about 1112.8582729936.

The spelling of 1378223263 in words is "one billion, three hundred seventy-eight million, two hundred twenty-three thousand, two hundred sixty-three".