981367361 has 4 divisors (see below), whose sum is σ = 1056857172. Its totient is φ = 905877552.

The previous prime is 981367357. The next prime is 981367399. The reversal of 981367361 is 163763189.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 163763189 = 181 ⋅904769.

It can be written as a sum of positive squares in 2 ways, for example, as 579124225 + 402243136 = 24065^2 + 20056^2 .

It is a cyclic number.

It is not a de Polignac number, because 981367361 - 2² = 981367357 is a prime.

It is a super-2 number, since 2×981367361² = 1926163794472208642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (981367301) 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 in 3 ways as a sum of consecutive naturals, for example, 37744886 + ... + 37744911.

It is an arithmetic number, because the mean of its divisors is an integer number (264214293).

Almost surely, 2^981367361 is an apocalyptic number.

It is an amenable number.

981367361 is a deficient number, since it is larger than the sum of its proper divisors (75489811).

981367361 is a wasteful number, since it uses less digits than its factorization.

981367361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75489810.

The product of its digits is 163296, while the sum is 44.

The square root of 981367361 is about 31326.7834448416. The cubic root of 981367361 is about 993.7501409701.

The spelling of 981367361 in words is "nine hundred eighty-one million, three hundred sixty-seven thousand, three hundred sixty-one".