116981869 has 2 divisors, whose sum is σ = 116981870. Its totient is φ = 116981868.

The previous prime is 116981849. The next prime is 116981873. The reversal of 116981869 is 968189611.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77668969 + 39312900 = 8813^2 + 6270^2 .

It is an emirp because it is prime and its reverse (968189611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 116981869 - 2⁷ = 116981741 is a prime.

It is a super-2 number, since 2×116981869² = 27369515349466322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (116981849) 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 as a sum of consecutive naturals, namely, 58490934 + 58490935.

It is an arithmetic number, because the mean of its divisors is an integer number (58490935).

Almost surely, 2^116981869 is an apocalyptic number.

It is an amenable number.

116981869 is a deficient number, since it is larger than the sum of its proper divisors (1).

116981869 is an equidigital number, since it uses as much as digits as its factorization.

116981869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 49.

The square root of 116981869 is about 10815.8156881485. The cubic root of 116981869 is about 489.0720588910.

It can be divided in two parts, 1169 and 81869, that added together give a palindrome (83038).

The spelling of 116981869 in words is "one hundred sixteen million, nine hundred eighty-one thousand, eight hundred sixty-nine".