1160999999 has 4 divisors (see below), whose sum is σ = 1161317400. Its totient is φ = 1160682600.

The previous prime is 1160999981. The next prime is 1161000011. The reversal of 1160999999 is 9999990611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1160999999 - 2⁸ = 1160999743 is a prime.

It is a Duffinian number.

1160999999 is a modest number, since divided by 99999 gives 11609 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1160999929) 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 3 ways as a sum of consecutive naturals, for example, 153149 + ... + 160550.

It is an arithmetic number, because the mean of its divisors is an integer number (290329350).

Almost surely, 2^1160999999 is an apocalyptic number.

1160999999 is a deficient number, since it is larger than the sum of its proper divisors (317401).

1160999999 is an equidigital number, since it uses as much as digits as its factorization.

1160999999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317400.

The product of its (nonzero) digits is 3188646, while the sum is 62.

The square root of 1160999999 is about 34073.4500601275. The cubic root of 1160999999 is about 1051.0194178143.

The spelling of 1160999999 in words is "one billion, one hundred sixty million, nine hundred ninety-nine thousand, nine hundred ninety-nine".