981482081 has 4 divisors (see below), whose sum is σ = 981646512. Its totient is φ = 981317652.

The previous prime is 981482071. The next prime is 981482087. The reversal of 981482081 is 180284189.

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 981482081 - 2²² = 977287777 is a prime.

It is a super-3 number, since 3×981482081³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (981482087) 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, 72911 + ... + 85316.

It is an arithmetic number, because the mean of its divisors is an integer number (245411628).

Almost surely, 2^981482081 is an apocalyptic number.

It is an amenable number.

981482081 is a deficient number, since it is larger than the sum of its proper divisors (164431).

981482081 is a wasteful number, since it uses less digits than its factorization.

981482081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164430.

The product of its (nonzero) digits is 36864, while the sum is 41.

The square root of 981482081 is about 31328.6144123866. The cubic root of 981482081 is about 993.7888619693.

The spelling of 981482081 in words is "nine hundred eighty-one million, four hundred eighty-two thousand, eighty-one".