1457327681 has 2 divisors, whose sum is σ = 1457327682. Its totient is φ = 1457327680.

The previous prime is 1457327593. The next prime is 1457327693. The reversal of 1457327681 is 1867237541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1107824656 + 349503025 = 33284^2 + 18695^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1457327681 is a prime.

It is a super-2 number, since 2×1457327681² = 4247607939617675522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1457327281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 728663840 + 728663841.

It is an arithmetic number, because the mean of its divisors is an integer number (728663841).

Almost surely, 2^1457327681 is an apocalyptic number.

It is an amenable number.

1457327681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1457327681 is an equidigital number, since it uses as much as digits as its factorization.

1457327681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 282240, while the sum is 44.

The square root of 1457327681 is about 38174.9614407140. The cubic root of 1457327681 is about 1133.7546241039.

The spelling of 1457327681 in words is "one billion, four hundred fifty-seven million, three hundred twenty-seven thousand, six hundred eighty-one".