83418857 has 2 divisors, whose sum is σ = 83418858. Its totient is φ = 83418856.

The previous prime is 83418851. The next prime is 83418869. The reversal of 83418857 is 75881438.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72522256 + 10896601 = 8516^2 + 3301^2 .

It is a cyclic number.

It is not a de Polignac number, because 83418857 - 2⁶ = 83418793 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (83418851) 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, 41709428 + 41709429.

It is an arithmetic number, because the mean of its divisors is an integer number (41709429).

Almost surely, 2^83418857 is an apocalyptic number.

It is an amenable number.

83418857 is a deficient number, since it is larger than the sum of its proper divisors (1).

83418857 is an equidigital number, since it uses as much as digits as its factorization.

83418857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 215040, while the sum is 44.

The square root of 83418857 is about 9133.3924146508. The cubic root of 83418857 is about 436.9396048892.

It can be divided in two parts, 834 and 18857, that added together give a palindrome (19691).

The spelling of 83418857 in words is "eighty-three million, four hundred eighteen thousand, eight hundred fifty-seven".