116864191 has 4 divisors (see below), whose sum is σ = 118845000. Its totient is φ = 114883384.

The previous prime is 116864129. The next prime is 116864207. The reversal of 116864191 is 191468611.

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

It is not a de Polignac number, because 116864191 - 2⁹ = 116863679 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 116864191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116864101) 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 in 3 ways as a sum of consecutive naturals, for example, 990316 + ... + 990433.

It is an arithmetic number, because the mean of its divisors is an integer number (29711250).

Almost surely, 2^116864191 is an apocalyptic number.

116864191 is a deficient number, since it is larger than the sum of its proper divisors (1980809).

116864191 is an equidigital number, since it uses as much as digits as its factorization.

116864191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1980808.

The product of its digits is 10368, while the sum is 37.

The square root of 116864191 is about 10810.3742303400. The cubic root of 116864191 is about 488.9080097339.

The spelling of 116864191 in words is "one hundred sixteen million, eight hundred sixty-four thousand, one hundred ninety-one".