1160721815 has 8 divisors (see below), whose sum is σ = 1519490448. Its totient is φ = 844161280.

The previous prime is 1160721787. The next prime is 1160721817. The reversal of 1160721815 is 5181270611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1160721815 - 2¹⁴ = 1160705431 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 (1160721817) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 10551962 + ... + 10552071.

It is an arithmetic number, because the mean of its divisors is an integer number (189936306).

Almost surely, 2^1160721815 is an apocalyptic number.

1160721815 is a deficient number, since it is larger than the sum of its proper divisors (358768633).

1160721815 is a wasteful number, since it uses less digits than its factorization.

1160721815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21104049.

The product of its (nonzero) digits is 3360, while the sum is 32.

The square root of 1160721815 is about 34069.3676929878. The cubic root of 1160721815 is about 1050.9354671565.

The spelling of 1160721815 in words is "one billion, one hundred sixty million, seven hundred twenty-one thousand, eight hundred fifteen".