7180980641 has 4 divisors (see below), whose sum is σ = 7181386884. Its totient is φ = 7180574400.

The previous prime is 7180980623. The next prime is 7180980691. The reversal of 7180980641 is 1460890817.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6805590016 + 375390625 = 82496^2 + 19375^2 .

It is a cyclic number.

It is not a de Polignac number, because 7180980641 - 2⁶ = 7180980577 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7180980592 and 7180980601.

It is not an unprimeable number, because it can be changed into a prime (7180980601) 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, 175340 + ... + 212381.

It is an arithmetic number, because the mean of its divisors is an integer number (1795346721).

Almost surely, 2^7180980641 is an apocalyptic number.

It is an amenable number.

7180980641 is a deficient number, since it is larger than the sum of its proper divisors (406243).

7180980641 is a wasteful number, since it uses less digits than its factorization.

7180980641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406242.

The product of its (nonzero) digits is 96768, while the sum is 44.

The square root of 7180980641 is about 84740.6669846302. Note that the first 3 decimals coincide. The cubic root of 7180980641 is about 1929.2769930933.

The spelling of 7180980641 in words is "seven billion, one hundred eighty million, nine hundred eighty thousand, six hundred forty-one".