1138750329 has 4 divisors (see below), whose sum is σ = 1518333776. Its totient is φ = 759166884.

The previous prime is 1138750307. The next prime is 1138750397. The reversal of 1138750329 is 9230578311.

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.

It is not a de Polignac number, because 1138750329 - 2⁷ = 1138750201 is a prime.

It is a super-4 number, since 4×1138750329⁴ (a number of 37 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1138750429) 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, 189791719 + ... + 189791724.

It is an arithmetic number, because the mean of its divisors is an integer number (379583444).

Almost surely, 2^1138750329 is an apocalyptic number.

It is an amenable number.

1138750329 is a deficient number, since it is larger than the sum of its proper divisors (379583447).

1138750329 is an equidigital number, since it uses as much as digits as its factorization.

1138750329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379583446.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 1138750329 is about 33745.3749275364. The cubic root of 1138750329 is about 1044.2620734515.

It can be divided in two parts, 11387 and 50329, that added together give a palindrome (61716).

The spelling of 1138750329 in words is "one billion, one hundred thirty-eight million, seven hundred fifty thousand, three hundred twenty-nine".