1348748729 has 2 divisors, whose sum is σ = 1348748730. Its totient is φ = 1348748728.

The previous prime is 1348748699. The next prime is 1348748741. The reversal of 1348748729 is 9278478431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1348725625 + 23104 = 36725^2 + 152^2 .

It is an emirp because it is prime and its reverse (9278478431) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1348748729 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 (1348748759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 674374364 + 674374365.

It is an arithmetic number, because the mean of its divisors is an integer number (674374365).

Almost surely, 2^1348748729 is an apocalyptic number.

It is an amenable number.

1348748729 is a deficient number, since it is larger than the sum of its proper divisors (1).

1348748729 is an equidigital number, since it uses as much as digits as its factorization.

1348748729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2709504, while the sum is 53.

The square root of 1348748729 is about 36725.3145527714. The cubic root of 1348748729 is about 1104.8678831690.

The spelling of 1348748729 in words is "one billion, three hundred forty-eight million, seven hundred forty-eight thousand, seven hundred twenty-nine".