1138560479 has 4 divisors (see below), whose sum is σ = 1301211984. Its totient is φ = 975908976.

The previous prime is 1138560463. The next prime is 1138560581. The reversal of 1138560479 is 9740658311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9740658311 = 89 ⋅109445599.

It is not a de Polignac number, because 1138560479 - 2⁴ = 1138560463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138560439) 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, 81325742 + ... + 81325755.

It is an arithmetic number, because the mean of its divisors is an integer number (325302996).

Almost surely, 2^1138560479 is an apocalyptic number.

1138560479 is a deficient number, since it is larger than the sum of its proper divisors (162651505).

1138560479 is an equidigital number, since it uses as much as digits as its factorization.

1138560479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162651504.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 1138560479 is about 33742.5618322024. The cubic root of 1138560479 is about 1044.2040378523.

The spelling of 1138560479 in words is "one billion, one hundred thirty-eight million, five hundred sixty thousand, four hundred seventy-nine".