1456744789 has 2 divisors, whose sum is σ = 1456744790. Its totient is φ = 1456744788.

The previous prime is 1456744741. The next prime is 1456744819. The reversal of 1456744789 is 9874476541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1109556100 + 347188689 = 33310^2 + 18633^2 .

It is a cyclic number.

It is not a de Polignac number, because 1456744789 - 2⁷ = 1456744661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1456774789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 728372394 + 728372395.

It is an arithmetic number, because the mean of its divisors is an integer number (728372395).

Almost surely, 2^1456744789 is an apocalyptic number.

It is an amenable number.

1456744789 is a deficient number, since it is larger than the sum of its proper divisors (1).

1456744789 is an equidigital number, since it uses as much as digits as its factorization.

1456744789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6773760, while the sum is 55.

The square root of 1456744789 is about 38167.3261966305. The cubic root of 1456744789 is about 1133.6034467957.

The spelling of 1456744789 in words is "one billion, four hundred fifty-six million, seven hundred forty-four thousand, seven hundred eighty-nine".