1366227173 has 2 divisors, whose sum is σ = 1366227174. Its totient is φ = 1366227172.

The previous prime is 1366227143. The next prime is 1366227197. The reversal of 1366227173 is 3717226631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1210900804 + 155326369 = 34798^2 + 12463^2 .

It is a cyclic number.

It is not a de Polignac number, because 1366227173 - 2²⁴ = 1349449957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1366227143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 683113586 + 683113587.

It is an arithmetic number, because the mean of its divisors is an integer number (683113587).

Almost surely, 2^1366227173 is an apocalyptic number.

It is an amenable number.

1366227173 is a deficient number, since it is larger than the sum of its proper divisors (1).

1366227173 is an equidigital number, since it uses as much as digits as its factorization.

1366227173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 38.

The square root of 1366227173 is about 36962.5103719972. The cubic root of 1366227173 is about 1109.6200774826.

The spelling of 1366227173 in words is "one billion, three hundred sixty-six million, two hundred twenty-seven thousand, one hundred seventy-three".