1139278616 has 32 divisors (see below), whose sum is σ = 2491140000. Its totient is φ = 488261088.

The previous prime is 1139278597. The next prime is 1139278643. The reversal of 1139278616 is 6168729311.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204851 + ... + 210338.

It is an arithmetic number, because the mean of its divisors is an integer number (77848125).

Almost surely, 2^1139278616 is an apocalyptic number.

It is an amenable number.

1139278616 is an abundant number, since it is smaller than the sum of its proper divisors (1351861384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1139278616 is an equidigital number, since it uses as much as digits as its factorization.

1139278616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415216 (or 415198 counting only the distinct ones).

The product of its digits is 108864, while the sum is 44.

The square root of 1139278616 is about 33753.2015666662. The cubic root of 1139278616 is about 1044.4235325458.

It can be divided in two parts, 113 and 9278616, that added together give a palindrome (9278729).

The spelling of 1139278616 in words is "one billion, one hundred thirty-nine million, two hundred seventy-eight thousand, six hundred sixteen".