1345224389 has 2 divisors, whose sum is σ = 1345224390. Its totient is φ = 1345224388.

The previous prime is 1345224383. The next prime is 1345224401. The reversal of 1345224389 is 9834225431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1341390625 + 3833764 = 36625^2 + 1958^2 .

It is a cyclic number.

It is not a de Polignac number, because 1345224389 - 2⁴ = 1345224373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1345224383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 672612194 + 672612195.

It is an arithmetic number, because the mean of its divisors is an integer number (672612195).

Almost surely, 2^1345224389 is an apocalyptic number.

It is an amenable number.

1345224389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1345224389 is an equidigital number, since it uses as much as digits as its factorization.

1345224389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 41.

The square root of 1345224389 is about 36677.3007321967. The cubic root of 1345224389 is about 1103.9046875309.

The spelling of 1345224389 in words is "one billion, three hundred forty-five million, two hundred twenty-four thousand, three hundred eighty-nine".