1457231509 has 2 divisors, whose sum is σ = 1457231510. Its totient is φ = 1457231508.

The previous prime is 1457231507. The next prime is 1457231513. The reversal of 1457231509 is 9051327541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 909203409 + 548028100 = 30153^2 + 23410^2 .

It is an emirp because it is prime and its reverse (9051327541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1457231509 - 2¹ = 1457231507 is a prime.

Together with 1457231507, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1457231507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 728615754 + 728615755.

It is an arithmetic number, because the mean of its divisors is an integer number (728615755).

Almost surely, 2^1457231509 is an apocalyptic number.

It is an amenable number.

1457231509 is a deficient number, since it is larger than the sum of its proper divisors (1).

1457231509 is an equidigital number, since it uses as much as digits as its factorization.

1457231509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 1457231509 is about 38173.7017984895. The cubic root of 1457231509 is about 1133.7296839687.

The spelling of 1457231509 in words is "one billion, four hundred fifty-seven million, two hundred thirty-one thousand, five hundred nine".