118284643 has 2 divisors, whose sum is σ = 118284644. Its totient is φ = 118284642.

The previous prime is 118284629. The next prime is 118284667. The reversal of 118284643 is 346482811.

It is a weak prime.

It is an emirp because it is prime and its reverse (346482811) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-118284643 is a prime.

It is not a weakly prime, because it can be changed into another prime (118284143) 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, 59142321 + 59142322.

It is an arithmetic number, because the mean of its divisors is an integer number (59142322).

Almost surely, 2^118284643 is an apocalyptic number.

118284643 is a deficient number, since it is larger than the sum of its proper divisors (1).

118284643 is an equidigital number, since it uses as much as digits as its factorization.

118284643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36864, while the sum is 37.

The square root of 118284643 is about 10875.8743556553. The cubic root of 118284643 is about 490.8808852658.

It can be divided in two parts, 11828 and 4643, that added together give a triangular number (16471 = T₁₈₁).

The spelling of 118284643 in words is "one hundred eighteen million, two hundred eighty-four thousand, six hundred forty-three".