1457731109 has 2 divisors, whose sum is σ = 1457731110. Its totient is φ = 1457731108.

The previous prime is 1457731061. The next prime is 1457731111. The reversal of 1457731109 is 9011377541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1387339009 + 70392100 = 37247^2 + 8390^2 .

It is an emirp because it is prime and its reverse (9011377541) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1457731109 is a prime.

It is a super-2 number, since 2×1457731109² = 4249959972292739762, which contains 22 as substring.

Together with 1457731111, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1457731169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 728865554 + 728865555.

It is an arithmetic number, because the mean of its divisors is an integer number (728865555).

Almost surely, 2^1457731109 is an apocalyptic number.

It is an amenable number.

1457731109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1457731109 is an equidigital number, since it uses as much as digits as its factorization.

1457731109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26460, while the sum is 38.

The square root of 1457731109 is about 38180.2450096905. The cubic root of 1457731109 is about 1133.8592325063.

The spelling of 1457731109 in words is "one billion, four hundred fifty-seven million, seven hundred thirty-one thousand, one hundred nine".