1366147213 has 2 divisors, whose sum is σ = 1366147214. Its totient is φ = 1366147212.

The previous prime is 1366147207. The next prime is 1366147229. The reversal of 1366147213 is 3127416631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1300828489 + 65318724 = 36067^2 + 8082^2 .

It is an emirp because it is prime and its reverse (3127416631) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1366147213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1366147273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 683073606 + 683073607.

It is an arithmetic number, because the mean of its divisors is an integer number (683073607).

Almost surely, 2^1366147213 is an apocalyptic number.

It is an amenable number.

1366147213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1366147213 is an equidigital number, since it uses as much as digits as its factorization.

1366147213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 34.

The square root of 1366147213 is about 36961.4287196802. The cubic root of 1366147213 is about 1109.5984298010.

The spelling of 1366147213 in words is "one billion, three hundred sixty-six million, one hundred forty-seven thousand, two hundred thirteen".