1138159259 has 16 divisors (see below), whose sum is σ = 1206213120. Its totient is φ = 1072256640.

The previous prime is 1138159247. The next prime is 1138159273. The reversal of 1138159259 is 9529518311.

It is a cyclic number.

It is not a de Polignac number, because 1138159259 - 2²⁰ = 1137110683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1138159459) 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 15 ways as a sum of consecutive naturals, for example, 291629 + ... + 295505.

It is an arithmetic number, because the mean of its divisors is an integer number (75388320).

Almost surely, 2^1138159259 is an apocalyptic number.

1138159259 is a deficient number, since it is larger than the sum of its proper divisors (68053861).

1138159259 is a wasteful number, since it uses less digits than its factorization.

1138159259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4150.

The product of its digits is 97200, while the sum is 44.

The square root of 1138159259 is about 33736.6159980517. The cubic root of 1138159259 is about 1044.0813669377.

The spelling of 1138159259 in words is "one billion, one hundred thirty-eight million, one hundred fifty-nine thousand, two hundred fifty-nine".