1073807281 has 2 divisors, whose sum is σ = 1073807282. Its totient is φ = 1073807280.

The previous prime is 1073807237. The next prime is 1073807327. The reversal of 1073807281 is 1827083701.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 958459681 + 115347600 = 30959^2 + 10740^2 .

It is an emirp because it is prime and its reverse (1827083701) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1073807281 - 2⁷ = 1073807153 is a prime.

It is a super-2 number, since 2×1073807281² = 2306124153457225922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1073807281.

It is not a weakly prime, because it can be changed into another prime (1073807201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 536903640 + 536903641.

It is an arithmetic number, because the mean of its divisors is an integer number (536903641).

Almost surely, 2^1073807281 is an apocalyptic number.

It is an amenable number.

1073807281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1073807281 is an equidigital number, since it uses as much as digits as its factorization.

1073807281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18816, while the sum is 37.

The square root of 1073807281 is about 32768.9987793341. The cubic root of 1073807281 is about 1024.0208077971.

The spelling of 1073807281 in words is "one billion, seventy-three million, eight hundred seven thousand, two hundred eighty-one".