116644181 has 2 divisors, whose sum is σ = 116644182. Its totient is φ = 116644180.

The previous prime is 116644169. The next prime is 116644207. The reversal of 116644181 is 181446611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85396081 + 31248100 = 9241^2 + 5590^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-116644181 is a prime.

It is a super-2 number, since 2×116644181² = 27211729922321522, 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 (116644141) 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 as a sum of consecutive naturals, namely, 58322090 + 58322091.

It is an arithmetic number, because the mean of its divisors is an integer number (58322091).

Almost surely, 2^116644181 is an apocalyptic number.

It is an amenable number.

116644181 is a deficient number, since it is larger than the sum of its proper divisors (1).

116644181 is an equidigital number, since it uses as much as digits as its factorization.

116644181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 32.

The square root of 116644181 is about 10800.1935630802. The cubic root of 116644181 is about 488.6010088700.

The spelling of 116644181 in words is "one hundred sixteen million, six hundred forty-four thousand, one hundred eighty-one".