1485117281 has 2 divisors, whose sum is σ = 1485117282. Its totient is φ = 1485117280.

The previous prime is 1485117241. The next prime is 1485117301. The reversal of 1485117281 is 1827115841.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1478787025 + 6330256 = 38455^2 + 2516^2 .

It is a cyclic number.

It is not a de Polignac number, because 1485117281 - 2²² = 1480922977 is a prime.

It is a super-2 number, since 2×1485117281² = 4411146676649665922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1485117241) 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, 742558640 + 742558641.

It is an arithmetic number, because the mean of its divisors is an integer number (742558641).

Almost surely, 2^1485117281 is an apocalyptic number.

It is an amenable number.

1485117281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1485117281 is an equidigital number, since it uses as much as digits as its factorization.

1485117281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17920, while the sum is 38.

The square root of 1485117281 is about 38537.2194248625. The cubic root of 1485117281 is about 1140.9157720551.

The spelling of 1485117281 in words is "one billion, four hundred eighty-five million, one hundred seventeen thousand, two hundred eighty-one".