1091916159 has 8 divisors (see below), whose sum is σ = 1457007360. Its totient is φ = 727384536.

The previous prime is 1091916113. The next prime is 1091916179. The reversal of 1091916159 is 9516191901.

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

It is not a de Polignac number, because 1091916159 - 2¹¹ = 1091914111 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1091916159.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1091916109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135319 + ... + 143160.

It is an arithmetic number, because the mean of its divisors is an integer number (182125920).

Almost surely, 2^1091916159 is an apocalyptic number.

1091916159 is a deficient number, since it is larger than the sum of its proper divisors (365091201).

1091916159 is a wasteful number, since it uses less digits than its factorization.

1091916159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279789.

The product of its (nonzero) digits is 21870, while the sum is 42.

The square root of 1091916159 is about 33044.1546873271. The cubic root of 1091916159 is about 1029.7451718227.

The spelling of 1091916159 in words is "one billion, ninety-one million, nine hundred sixteen thousand, one hundred fifty-nine".