1345226669 has 2 divisors, whose sum is σ = 1345226670. Its totient is φ = 1345226668.

The previous prime is 1345226651. The next prime is 1345226671. The reversal of 1345226669 is 9666225431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1169982025 + 175244644 = 34205^2 + 13238^2 .

It is a cyclic number.

It is not a de Polignac number, because 1345226669 - 2¹² = 1345222573 is a prime.

It is a super-2 number, since 2×1345226669² = 3619269581977671122, which contains 22 as substring.

Together with 1345226671, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1345226569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672613334 + 672613335.

It is an arithmetic number, because the mean of its divisors is an integer number (672613335).

Almost surely, 2^1345226669 is an apocalyptic number.

It is an amenable number.

1345226669 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345226669 is an equidigital number, since it uses as much as digits as its factorization.

1345226669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 44.

The square root of 1345226669 is about 36677.3318140783. The cubic root of 1345226669 is about 1103.9053111942.

The spelling of 1345226669 in words is "one billion, three hundred forty-five million, two hundred twenty-six thousand, six hundred sixty-nine".