1081087199 has 4 divisors (see below), whose sum is σ = 1085573280. Its totient is φ = 1076601120.

The previous prime is 1081087187. The next prime is 1081087223. The reversal of 1081087199 is 9917801801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9917801801 = 59113 ⋅167777.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1081087199 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 (1081087129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2242679 + ... + 2243160.

It is an arithmetic number, because the mean of its divisors is an integer number (271393320).

Almost surely, 2^1081087199 is an apocalyptic number.

1081087199 is a deficient number, since it is larger than the sum of its proper divisors (4486081).

1081087199 is an equidigital number, since it uses as much as digits as its factorization.

1081087199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4486080.

The product of its (nonzero) digits is 36288, while the sum is 44.

The square root of 1081087199 is about 32879.8904955597. The cubic root of 1081087199 is about 1026.3297273880.

The spelling of 1081087199 in words is "one billion, eighty-one million, eighty-seven thousand, one hundred ninety-nine".