981030073 has 4 divisors (see below), whose sum is σ = 981401680. Its totient is φ = 980658468.

The previous prime is 981030041. The next prime is 981030077. The reversal of 981030073 is 370030189.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 981030073 - 2⁵ = 981030041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (981030077) 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, 181815 + ... + 187132.

It is an arithmetic number, because the mean of its divisors is an integer number (245350420).

Almost surely, 2^981030073 is an apocalyptic number.

It is an amenable number.

981030073 is a deficient number, since it is larger than the sum of its proper divisors (371607).

981030073 is a wasteful number, since it uses less digits than its factorization.

981030073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371606.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 981030073 is about 31321.3996015504. The cubic root of 981030073 is about 993.6362799711.

The spelling of 981030073 in words is "nine hundred eighty-one million, thirty thousand, seventy-three".