1345250279 has 2 divisors, whose sum is σ = 1345250280. Its totient is φ = 1345250278.

The previous prime is 1345250189. The next prime is 1345250281. The reversal of 1345250279 is 9720525431.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1345250279 is a prime.

Together with 1345250281, 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 (1345250299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672625139 + 672625140.

It is an arithmetic number, because the mean of its divisors is an integer number (672625140).

Almost surely, 2^1345250279 is an apocalyptic number.

1345250279 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345250279 is an equidigital number, since it uses as much as digits as its factorization.

1345250279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 1345250279 is about 36677.6536735926. The cubic root of 1345250279 is about 1103.9117693505.

The spelling of 1345250279 in words is "one billion, three hundred forty-five million, two hundred fifty thousand, two hundred seventy-nine".