1116997671 has 4 divisors (see below), whose sum is σ = 1489330232. Its totient is φ = 744665112.

The previous prime is 1116997667. The next prime is 1116997681. The reversal of 1116997671 is 1767996111.

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

It is not a de Polignac number, because 1116997671 - 2² = 1116997667 is a prime.

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 1116997671.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1116997681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186166276 + ... + 186166281.

It is an arithmetic number, because the mean of its divisors is an integer number (372332558).

Almost surely, 2^1116997671 is an apocalyptic number.

1116997671 is a deficient number, since it is larger than the sum of its proper divisors (372332561).

1116997671 is an equidigital number, since it uses as much as digits as its factorization.

1116997671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372332560.

The product of its digits is 142884, while the sum is 48.

The square root of 1116997671 is about 33421.5150913300. The cubic root of 1116997671 is about 1037.5700390323.

The spelling of 1116997671 in words is "one billion, one hundred sixteen million, nine hundred ninety-seven thousand, six hundred seventy-one".