1451441081 has 2 divisors, whose sum is σ = 1451441082. Its totient is φ = 1451441080.

The previous prime is 1451441077. The next prime is 1451441087. The reversal of 1451441081 is 1801441541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1421290000 + 30151081 = 37700^2 + 5491^2 .

It is an emirp because it is prime and its reverse (1801441541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1451441081 - 2² = 1451441077 is a prime.

It is a super-2 number, since 2×1451441081² = 4213362423228897122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1451441087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 725720540 + 725720541.

It is an arithmetic number, because the mean of its divisors is an integer number (725720541).

Almost surely, 2^1451441081 is an apocalyptic number.

It is an amenable number.

1451441081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1451441081 is an equidigital number, since it uses as much as digits as its factorization.

1451441081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2560, while the sum is 29.

The square root of 1451441081 is about 38097.7831507294. The cubic root of 1451441081 is about 1132.2260348594.

The spelling of 1451441081 in words is "one billion, four hundred fifty-one million, four hundred forty-one thousand, eighty-one".