1457243549 has 2 divisors, whose sum is σ = 1457243550. Its totient is φ = 1457243548.

The previous prime is 1457243521. The next prime is 1457243569. The reversal of 1457243549 is 9453427541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1236928900 + 220314649 = 35170^2 + 14843^2 .

It is a cyclic number.

It is not a de Polignac number, because 1457243549 - 2¹⁶ = 1457178013 is a prime.

It is a super-2 number, since 2×1457243549² = 4247117522204230802, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1457243569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 728621774 + 728621775.

It is an arithmetic number, because the mean of its divisors is an integer number (728621775).

Almost surely, 2^1457243549 is an apocalyptic number.

It is an amenable number.

1457243549 is a deficient number, since it is larger than the sum of its proper divisors (1).

1457243549 is an equidigital number, since it uses as much as digits as its factorization.

1457243549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 604800, while the sum is 44.

The square root of 1457243549 is about 38173.8594983531. The cubic root of 1457243549 is about 1133.7328063433.

The spelling of 1457243549 in words is "one billion, four hundred fifty-seven million, two hundred forty-three thousand, five hundred forty-nine".