71918843 has 2 divisors, whose sum is σ = 71918844. Its totient is φ = 71918842.

The previous prime is 71918837. The next prime is 71918849. The reversal of 71918843 is 34881917.

It is a balanced prime because it is at equal distance from previous prime (71918837) and next prime (71918849).

It is a cyclic number.

It is not a de Polignac number, because 71918843 - 2¹⁰ = 71917819 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71918843.

It is not a weakly prime, because it can be changed into another prime (71918849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35959421 + 35959422.

It is an arithmetic number, because the mean of its divisors is an integer number (35959422).

Almost surely, 2^71918843 is an apocalyptic number.

71918843 is a deficient number, since it is larger than the sum of its proper divisors (1).

71918843 is an equidigital number, since it uses as much as digits as its factorization.

71918843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 41.

The square root of 71918843 is about 8480.4978037849. The cubic root of 71918843 is about 415.8603971749.

The spelling of 71918843 in words is "seventy-one million, nine hundred eighteen thousand, eight hundred forty-three".