1139144613 has 4 divisors (see below), whose sum is σ = 1518859488. Its totient is φ = 759429740.

The previous prime is 1139144609. The next prime is 1139144659. The reversal of 1139144613 is 3164419311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3164419311 = 3 ⋅1054806437.

It is a cyclic number.

It is not a de Polignac number, because 1139144613 - 2² = 1139144609 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1139144663) 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 3 ways as a sum of consecutive naturals, for example, 189857433 + ... + 189857438.

It is an arithmetic number, because the mean of its divisors is an integer number (379714872).

Almost surely, 2^1139144613 is an apocalyptic number.

It is an amenable number.

1139144613 is a deficient number, since it is larger than the sum of its proper divisors (379714875).

1139144613 is an equidigital number, since it uses as much as digits as its factorization.

1139144613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379714874.

The product of its digits is 7776, while the sum is 33.

The square root of 1139144613 is about 33751.2164669660. The cubic root of 1139144613 is about 1044.3825822543.

The spelling of 1139144613 in words is "one billion, one hundred thirty-nine million, one hundred forty-four thousand, six hundred thirteen".