1346378269 has 2 divisors, whose sum is σ = 1346378270. Its totient is φ = 1346378268.

The previous prime is 1346378261. The next prime is 1346378281. The reversal of 1346378269 is 9628736431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1286083044 + 60295225 = 35862^2 + 7765^2 .

It is a cyclic number.

It is not a de Polignac number, because 1346378269 - 2³ = 1346378261 is a prime.

It is a super-2 number, since 2×1346378269² = 3625468886470872722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1346378261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 673189134 + 673189135.

It is an arithmetic number, because the mean of its divisors is an integer number (673189135).

Almost surely, 2^1346378269 is an apocalyptic number.

It is an amenable number.

1346378269 is a deficient number, since it is larger than the sum of its proper divisors (1).

1346378269 is an equidigital number, since it uses as much as digits as its factorization.

1346378269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 49.

The square root of 1346378269 is about 36693.0275256758. The cubic root of 1346378269 is about 1104.2202258474.

The spelling of 1346378269 in words is "one billion, three hundred forty-six million, three hundred seventy-eight thousand, two hundred sixty-nine".