985814111 has 2 divisors, whose sum is σ = 985814112. Its totient is φ = 985814110.

The previous prime is 985814101. The next prime is 985814129. The reversal of 985814111 is 111418589.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 985814111 - 2¹⁸ = 985551967 is a prime.

It is a super-2 number, since 2×985814111² = 1943658922893440642, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (985814101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492907055 + 492907056.

It is an arithmetic number, because the mean of its divisors is an integer number (492907056).

Almost surely, 2^985814111 is an apocalyptic number.

985814111 is a deficient number, since it is larger than the sum of its proper divisors (1).

985814111 is an equidigital number, since it uses as much as digits as its factorization.

985814111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 38.

The square root of 985814111 is about 31397.6768408110. The cubic root of 985814111 is about 995.2488324909.

The spelling of 985814111 in words is "nine hundred eighty-five million, eight hundred fourteen thousand, one hundred eleven".