980724981 has 4 divisors (see below), whose sum is σ = 1307633312. Its totient is φ = 653816652.

The previous prime is 980724977. The next prime is 980724989. The reversal of 980724981 is 189427089.

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, and also an emirpimes, since its reverse is a distinct semiprime: 189427089 = 3 ⋅63142363.

It is not a de Polignac number, because 980724981 - 2² = 980724977 is a prime.

It is a super-2 number, since 2×980724981² = 1923642976714900722, 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 980724981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (980724989) 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, 163454161 + ... + 163454166.

It is an arithmetic number, because the mean of its divisors is an integer number (326908328).

Almost surely, 2^980724981 is an apocalyptic number.

It is an amenable number.

980724981 is a deficient number, since it is larger than the sum of its proper divisors (326908331).

980724981 is a wasteful number, since it uses less digits than its factorization.

980724981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326908330.

The product of its (nonzero) digits is 290304, while the sum is 48.

The square root of 980724981 is about 31316.5288785331. The cubic root of 980724981 is about 993.5332651504.

The spelling of 980724981 in words is "nine hundred eighty million, seven hundred twenty-four thousand, nine hundred eighty-one".