1138759236 has 84 divisors (see below), whose sum is σ = 3038977200. Its totient is φ = 373096368.

The previous prime is 1138759231. The next prime is 1138759241. The reversal of 1138759236 is 6329578311.

It is an interprime number because it is at equal distance from previous prime (1138759231) and next prime (1138759241).

It is a junction number, because it is equal to n+sod(n) for n = 1138759191 and 1138759200.

It is not an unprimeable number, because it can be changed into a prime (1138759231) by changing a digit.

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 27 ways as a sum of consecutive naturals, for example, 168735 + ... + 175353.

It is an arithmetic number, because the mean of its divisors is an integer number (36178300).

Almost surely, 2^1138759236 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1138759236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1519488600).

1138759236 is an abundant number, since it is smaller than the sum of its proper divisors (1900217964).

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

1138759236 is an equidigital number, since it uses as much as digits as its factorization.

1138759236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6700 (or 6683 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 1138759236 is about 33745.5069009194. The cubic root of 1138759236 is about 1044.2647960905.

The spelling of 1138759236 in words is "one billion, one hundred thirty-eight million, seven hundred fifty-nine thousand, two hundred thirty-six".