981377167 has 2 divisors, whose sum is σ = 981377168. Its totient is φ = 981377166.

The previous prime is 981377093. The next prime is 981377209. The reversal of 981377167 is 761773189.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 981377167 - 2⁷ = 981377039 is a prime.

It is a super-2 number, since 2×981377167² = 1926202287817891778, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 981377167.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (981374167) 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, 490688583 + 490688584.

It is an arithmetic number, because the mean of its divisors is an integer number (490688584).

Almost surely, 2^981377167 is an apocalyptic number.

981377167 is a deficient number, since it is larger than the sum of its proper divisors (1).

981377167 is an equidigital number, since it uses as much as digits as its factorization.

981377167 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 444528, while the sum is 49.

The square root of 981377167 is about 31326.9399558910. The cubic root of 981377167 is about 993.7534508694.

The spelling of 981377167 in words is "nine hundred eighty-one million, three hundred seventy-seven thousand, one hundred sixty-seven".