1366229779 has 2 divisors, whose sum is σ = 1366229780. Its totient is φ = 1366229778.

The previous prime is 1366229743. The next prime is 1366229791. The reversal of 1366229779 is 9779226631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1366229779 - 2¹⁷ = 1366098707 is a prime.

It is not a weakly prime, because it can be changed into another prime (1366224779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 683114889 + 683114890.

It is an arithmetic number, because the mean of its divisors is an integer number (683114890).

Almost surely, 2^1366229779 is an apocalyptic number.

1366229779 is a deficient number, since it is larger than the sum of its proper divisors (1).

1366229779 is an equidigital number, since it uses as much as digits as its factorization.

1366229779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1714608, while the sum is 52.

The square root of 1366229779 is about 36962.5456239150. The cubic root of 1366229779 is about 1109.6207829944.

The spelling of 1366229779 in words is "one billion, three hundred sixty-six million, two hundred twenty-nine thousand, seven hundred seventy-nine".