980047081 has 4 divisors (see below), whose sum is σ = 1055435332. Its totient is φ = 904658832.

The previous prime is 980047073. The next prime is 980047087. The reversal of 980047081 is 180740089.

It is the 12781-st star number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 180740089 = 5623 ⋅32143.

It can be written as a sum of positive squares in 2 ways, for example, as 184525056 + 795522025 = 13584^2 + 28205^2 .

It is a cyclic number.

It is not a de Polignac number, because 980047081 - 2³ = 980047073 is a prime.

It is a super-2 number, since 2×980047081² = 1920984561953241122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 980047081.

It is not an unprimeable number, because it can be changed into a prime (980047087) 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, 37694106 + ... + 37694131.

It is an arithmetic number, because the mean of its divisors is an integer number (263858833).

Almost surely, 2^980047081 is an apocalyptic number.

It is an amenable number.

980047081 is a deficient number, since it is larger than the sum of its proper divisors (75388251).

980047081 is a wasteful number, since it uses less digits than its factorization.

980047081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75388250.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 980047081 is about 31305.7036496546. The cubic root of 980047081 is about 993.3042945907.

The spelling of 980047081 in words is "nine hundred eighty million, forty-seven thousand, eighty-one".