1116713781 has 6 divisors (see below), whose sum is σ = 1613031030. Its totient is φ = 744475848.

The previous prime is 1116713753. The next prime is 1116713783. The reversal of 1116713781 is 1873176111.

It can be written as a sum of positive squares in only one way, i.e., 1104498756 + 12215025 = 33234^2 + 3495^2 .

It is not a de Polignac number, because 1116713781 - 2¹⁹ = 1116189493 is a prime.

It is a super-2 number, since 2×1116713781² = 2494099337350631922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1116713783) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 62039646 + ... + 62039663.

It is an arithmetic number, because the mean of its divisors is an integer number (268838505).

Almost surely, 2^1116713781 is an apocalyptic number.

It is an amenable number.

1116713781 is a deficient number, since it is larger than the sum of its proper divisors (496317249).

1116713781 is a wasteful number, since it uses less digits than its factorization.

1116713781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124079315 (or 124079312 counting only the distinct ones).

The product of its digits is 7056, while the sum is 36.

The square root of 1116713781 is about 33417.2677069805. The cubic root of 1116713781 is about 1037.4821305482.

Adding to 1116713781 its reverse (1873176111), we get a palindrome (2989889892).

The spelling of 1116713781 in words is "one billion, one hundred sixteen million, seven hundred thirteen thousand, seven hundred eighty-one".