1119798987 has 4 divisors (see below), whose sum is σ = 1493065320. Its totient is φ = 746532656.

The previous prime is 1119798973. The next prime is 1119798989. The reversal of 1119798987 is 7898979111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7898979111 = 3 ⋅2632993037.

It is a cyclic number.

It is not a de Polignac number, because 1119798987 - 2⁴ = 1119798971 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1119798987.

It is not an unprimeable number, because it can be changed into a prime (1119798989) 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, 186633162 + ... + 186633167.

It is an arithmetic number, because the mean of its divisors is an integer number (373266330).

Almost surely, 2^1119798987 is an apocalyptic number.

1119798987 is a deficient number, since it is larger than the sum of its proper divisors (373266333).

1119798987 is an equidigital number, since it uses as much as digits as its factorization.

1119798987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373266332.

The product of its digits is 2286144, while the sum is 60.

The square root of 1119798987 is about 33463.3977204946. The cubic root of 1119798987 is about 1038.4366881520.

The spelling of 1119798987 in words is "one billion, one hundred nineteen million, seven hundred ninety-eight thousand, nine hundred eighty-seven".