1139068109 has 4 divisors (see below), whose sum is σ = 1166850300. Its totient is φ = 1111285920.

The previous prime is 1139068093. The next prime is 1139068141. The reversal of 1139068109 is 9018609311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9018609311 = 31 ⋅290922881.

It can be written as a sum of positive squares in 2 ways, for example, as 302586025 + 836482084 = 17395^2 + 28922^2 .

It is a cyclic number.

It is not a de Polignac number, because 1139068109 - 2⁴ = 1139068093 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139068159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13891034 + ... + 13891115.

It is an arithmetic number, because the mean of its divisors is an integer number (291712575).

Almost surely, 2^1139068109 is an apocalyptic number.

It is an amenable number.

1139068109 is a deficient number, since it is larger than the sum of its proper divisors (27782191).

1139068109 is an equidigital number, since it uses as much as digits as its factorization.

1139068109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27782190.

The product of its (nonzero) digits is 11664, while the sum is 38.

The square root of 1139068109 is about 33750.0830961940. The cubic root of 1139068109 is about 1044.3592017771.

The spelling of 1139068109 in words is "one billion, one hundred thirty-nine million, sixty-eight thousand, one hundred nine".