981271873 has 2 divisors, whose sum is σ = 981271874. Its totient is φ = 981271872.

The previous prime is 981271849. The next prime is 981271933. The reversal of 981271873 is 378172189.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 961496064 + 19775809 = 31008^2 + 4447^2 .

It is a cyclic number.

It is not a de Polignac number, because 981271873 - 2¹⁷ = 981140801 is a prime.

It is not a weakly prime, because it can be changed into another prime (981271843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490635936 + 490635937.

It is an arithmetic number, because the mean of its divisors is an integer number (490635937).

Almost surely, 2^981271873 is an apocalyptic number.

It is an amenable number.

981271873 is a deficient number, since it is larger than the sum of its proper divisors (1).

981271873 is an equidigital number, since it uses as much as digits as its factorization.

981271873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 169344, while the sum is 46.

The square root of 981271873 is about 31325.2593444971. The cubic root of 981271873 is about 993.7179089725.

It can be divided in two parts, 98127 and 1873, that added together give a 5-th power (100000 = 10⁵).

The spelling of 981271873 in words is "nine hundred eighty-one million, two hundred seventy-one thousand, eight hundred seventy-three".