1451132681 has 2 divisors, whose sum is σ = 1451132682. Its totient is φ = 1451132680.

The previous prime is 1451132659. The next prime is 1451132687. The reversal of 1451132681 is 1862311541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 853574656 + 597558025 = 29216^2 + 24445^2 .

It is a cyclic number.

It is not a de Polignac number, because 1451132681 - 2¹⁸ = 1450870537 is a prime.

It is a super-2 number, since 2×1451132681² = 4211572115732495522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1451132687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 725566340 + 725566341.

It is an arithmetic number, because the mean of its divisors is an integer number (725566341).

Almost surely, 2^1451132681 is an apocalyptic number.

It is an amenable number.

1451132681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1451132681 is an equidigital number, since it uses as much as digits as its factorization.

1451132681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 32.

The square root of 1451132681 is about 38093.7354561088. The cubic root of 1451132681 is about 1132.1458379554.

The spelling of 1451132681 in words is "one billion, four hundred fifty-one million, one hundred thirty-two thousand, six hundred eighty-one".