981059113 has 4 divisors (see below), whose sum is σ = 981136980. Its totient is φ = 980981248.

The previous prime is 981059063. The next prime is 981059119. The reversal of 981059113 is 311950189.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 169208064 + 811851049 = 13008^2 + 28493^2 .

It is a cyclic number.

It is not a de Polignac number, because 981059113 - 2⁹ = 981058601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (981059119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15220 + ... + 46837.

It is an arithmetic number, because the mean of its divisors is an integer number (245284245).

Almost surely, 2^981059113 is an apocalyptic number.

It is an amenable number.

981059113 is a deficient number, since it is larger than the sum of its proper divisors (77867).

981059113 is a wasteful number, since it uses less digits than its factorization.

981059113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77866.

The product of its (nonzero) digits is 9720, while the sum is 37.

The square root of 981059113 is about 31321.8631789362. The cubic root of 981059113 is about 993.6460842621.

The spelling of 981059113 in words is "nine hundred eighty-one million, fifty-nine thousand, one hundred thirteen".