980855111 has 2 divisors, whose sum is σ = 980855112. Its totient is φ = 980855110.

The previous prime is 980855093. The next prime is 980855123. The reversal of 980855111 is 111558089.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 980855111 - 2¹⁰ = 980854087 is a 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 (980855191) 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, 490427555 + 490427556.

It is an arithmetic number, because the mean of its divisors is an integer number (490427556).

Almost surely, 2^980855111 is an apocalyptic number.

980855111 is a deficient number, since it is larger than the sum of its proper divisors (1).

980855111 is an equidigital number, since it uses as much as digits as its factorization.

980855111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 38.

The square root of 980855111 is about 31318.6064664442. The cubic root of 980855111 is about 993.5772063737.

The spelling of 980855111 in words is "nine hundred eighty million, eight hundred fifty-five thousand, one hundred eleven".