1008138959 has 8 divisors (see below), whose sum is σ = 1026000000. Its totient is φ = 990303832.

The previous prime is 1008138953. The next prime is 1008138973. The reversal of 1008138959 is 9598318001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1008138959 - 2²⁴ = 991361743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1008138953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82742 + ... + 94140.

It is an arithmetic number, because the mean of its divisors is an integer number (128250000).

Almost surely, 2^1008138959 is an apocalyptic number.

1008138959 is a deficient number, since it is larger than the sum of its proper divisors (17861041).

1008138959 is a wasteful number, since it uses less digits than its factorization.

1008138959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12957.

The product of its (nonzero) digits is 77760, while the sum is 44.

The square root of 1008138959 is about 31751.2040559094. The cubic root of 1008138959 is about 1002.7056591396.

The spelling of 1008138959 in words is "one billion, eight million, one hundred thirty-eight thousand, nine hundred fifty-nine".