1348423649 has 2 divisors, whose sum is σ = 1348423650. Its totient is φ = 1348423648.

The previous prime is 1348423633. The next prime is 1348423667. The reversal of 1348423649 is 9463248431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 865830625 + 482593024 = 29425^2 + 21968^2 .

It is a cyclic number.

It is not a de Polignac number, because 1348423649 - 2⁴ = 1348423633 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1348423049) 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, 674211824 + 674211825.

It is an arithmetic number, because the mean of its divisors is an integer number (674211825).

Almost surely, 2^1348423649 is an apocalyptic number.

It is an amenable number.

1348423649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1348423649 is an equidigital number, since it uses as much as digits as its factorization.

1348423649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 497664, while the sum is 44.

The square root of 1348423649 is about 36720.8884560273. Note that the first 3 decimals coincide. The cubic root of 1348423649 is about 1104.7791096998.

The spelling of 1348423649 in words is "one billion, three hundred forty-eight million, four hundred twenty-three thousand, six hundred forty-nine".