116881591 has 2 divisors, whose sum is σ = 116881592. Its totient is φ = 116881590.

The previous prime is 116881577. The next prime is 116881627. The reversal of 116881591 is 195188611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 116881591 - 2¹³ = 116873399 is a prime.

It is a super-2 number, since 2×116881591² = 27322612629382562, 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 (116881291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58440795 + 58440796.

It is an arithmetic number, because the mean of its divisors is an integer number (58440796).

Almost surely, 2^116881591 is an apocalyptic number.

116881591 is a deficient number, since it is larger than the sum of its proper divisors (1).

116881591 is an equidigital number, since it uses as much as digits as its factorization.

116881591 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 40.

The square root of 116881591 is about 10811.1789828862. The cubic root of 116881591 is about 488.9322731606.

The spelling of 116881591 in words is "one hundred sixteen million, eight hundred eighty-one thousand, five hundred ninety-one".