1081243417 has 2 divisors, whose sum is σ = 1081243418. Its totient is φ = 1081243416.

The previous prime is 1081243399. The next prime is 1081243439. The reversal of 1081243417 is 7143421801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1024256016 + 56987401 = 32004^2 + 7549^2 .

It is an emirp because it is prime and its reverse (7143421801) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1081243417 is a prime.

It is not a weakly prime, because it can be changed into another prime (1081243487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 540621708 + 540621709.

It is an arithmetic number, because the mean of its divisors is an integer number (540621709).

Almost surely, 2^1081243417 is an apocalyptic number.

It is an amenable number.

1081243417 is a deficient number, since it is larger than the sum of its proper divisors (1).

1081243417 is an equidigital number, since it uses as much as digits as its factorization.

1081243417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 1081243417 is about 32882.2659955180. The cubic root of 1081243417 is about 1026.3791601736.

The spelling of 1081243417 in words is "one billion, eighty-one million, two hundred forty-three thousand, four hundred seventeen".