1008278417 has 2 divisors, whose sum is σ = 1008278418. Its totient is φ = 1008278416.

The previous prime is 1008278399. The next prime is 1008278459. The reversal of 1008278417 is 7148728001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 607918336 + 400360081 = 24656^2 + 20009^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1008278417 is a prime.

It is not a weakly prime, because it can be changed into another prime (1008278477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 504139208 + 504139209.

It is an arithmetic number, because the mean of its divisors is an integer number (504139209).

Almost surely, 2^1008278417 is an apocalyptic number.

It is an amenable number.

1008278417 is a deficient number, since it is larger than the sum of its proper divisors (1).

1008278417 is an equidigital number, since it uses as much as digits as its factorization.

1008278417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25088, while the sum is 38.

The square root of 1008278417 is about 31753.4000856601. The cubic root of 1008278417 is about 1002.7518924745.

The spelling of 1008278417 in words is "one billion, eight million, two hundred seventy-eight thousand, four hundred seventeen".