981162611 has 16 divisors (see below), whose sum is σ = 1165661280. Its totient is φ = 814091520.

The previous prime is 981162601. The next prime is 981162619. The reversal of 981162611 is 116261189.

It is a de Polignac number, because none of the positive numbers 2^k-981162611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (981162619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25820 + ... + 51273.

It is an arithmetic number, because the mean of its divisors is an integer number (72853830).

Almost surely, 2^981162611 is an apocalyptic number.

981162611 is a deficient number, since it is larger than the sum of its proper divisors (184498669).

981162611 is a wasteful number, since it uses less digits than its factorization.

981162611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77206.

The product of its digits is 5184, while the sum is 35.

The square root of 981162611 is about 31323.5153040012. The cubic root of 981162611 is about 993.6810249926.

The spelling of 981162611 in words is "nine hundred eighty-one million, one hundred sixty-two thousand, six hundred eleven".