1131916681 has 8 divisors (see below), whose sum is σ = 1295546624. Its totient is φ = 968768640.

The previous prime is 1131916679. The next prime is 1131916699. The reversal of 1131916681 is 1866191311.

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

It is not a de Polignac number, because 1131916681 - 2¹ = 1131916679 is a prime.

It is a super-2 number, since 2×1131916681² = 2562470745452111522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1131916681.

It is not an unprimeable number, because it can be changed into a prime (1131916631) 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 7 ways as a sum of consecutive naturals, for example, 115425 + ... + 124846.

It is an arithmetic number, because the mean of its divisors is an integer number (161943328).

Almost surely, 2^1131916681 is an apocalyptic number.

It is an amenable number.

1131916681 is a deficient number, since it is larger than the sum of its proper divisors (163629943).

1131916681 is an equidigital number, since it uses as much as digits as its factorization.

1131916681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240951.

The product of its digits is 7776, while the sum is 37.

The square root of 1131916681 is about 33643.9694596223. The cubic root of 1131916681 is about 1042.1690065572.

The spelling of 1131916681 in words is "one billion, one hundred thirty-one million, nine hundred sixteen thousand, six hundred eighty-one".