1378228711 has 2 divisors, whose sum is σ = 1378228712. Its totient is φ = 1378228710.

The previous prime is 1378228699. The next prime is 1378228717. The reversal of 1378228711 is 1178228731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1378228711 - 2⁵ = 1378228679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1378228717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 689114355 + 689114356.

It is an arithmetic number, because the mean of its divisors is an integer number (689114356).

Almost surely, 2^1378228711 is an apocalyptic number.

1378228711 is a deficient number, since it is larger than the sum of its proper divisors (1).

1378228711 is an equidigital number, since it uses as much as digits as its factorization.

1378228711 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37632, while the sum is 40.

The square root of 1378228711 is about 37124.5028384220. The cubic root of 1378228711 is about 1112.8597393365.

The spelling of 1378228711 in words is "one billion, three hundred seventy-eight million, two hundred twenty-eight thousand, seven hundred eleven".