1119999999 has 4 divisors (see below), whose sum is σ = 1493333336. Its totient is φ = 746666664.

The previous prime is 1119999983. The next prime is 1120000031. The reversal of 1119999999 is 9999999111.

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

It is not a de Polignac number, because 1119999999 - 2⁴ = 1119999983 is a prime.

It is a Duffinian number.

1119999999 is a modest number, since divided by 99999 gives 11199 as remainder.

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1119999929) 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, 186666664 + ... + 186666669.

It is an arithmetic number, because the mean of its divisors is an integer number (373333334).

Almost surely, 2^1119999999 is an apocalyptic number.

1119999999 is a deficient number, since it is larger than the sum of its proper divisors (373333337).

1119999999 is an equidigital number, since it uses as much as digits as its factorization.

1119999999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373333336.

The product of its digits is 4782969, while the sum is 66.

The square root of 1119999999 is about 33466.4010464227. The cubic root of 1119999999 is about 1038.4988200611.

The spelling of 1119999999 in words is "one billion, one hundred nineteen million, nine hundred ninety-nine thousand, nine hundred ninety-nine".