1138724320 has 24 divisors (see below), whose sum is σ = 2690236584. Its totient is φ = 455489664.

The previous prime is 1138724269. The next prime is 1138724339. The reversal of 1138724320 is 234278311.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3558354 + ... + 3558673.

It is an arithmetic number, because the mean of its divisors is an integer number (112093191).

Almost surely, 2^1138724320 is an apocalyptic number.

1138724320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1138724320 is an abundant number, since it is smaller than the sum of its proper divisors (1551512264).

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

1138724320 is an equidigital number, since it uses as much as digits as its factorization.

1138724320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7117042 (or 7117034 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 1138724320 is about 33744.9895540064. The cubic root of 1138724320 is about 1044.2541230933.

The spelling of 1138724320 in words is "one billion, one hundred thirty-eight million, seven hundred twenty-four thousand, three hundred twenty".