1180830521 has 4 divisors (see below), whose sum is σ = 1271663652. Its totient is φ = 1089997392.

The previous prime is 1180830509. The next prime is 1180830529. The reversal of 1180830521 is 1250380811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1250380811 = 4219 ⋅296369.

It can be written as a sum of positive squares in 2 ways, for example, as 360810025 + 820020496 = 18995^2 + 28636^2 .

It is a cyclic number.

It is not a de Polignac number, because 1180830521 - 2²⁶ = 1113721657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1180830529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45416546 + ... + 45416571.

It is an arithmetic number, because the mean of its divisors is an integer number (317915913).

Almost surely, 2^1180830521 is an apocalyptic number.

It is an amenable number.

1180830521 is a deficient number, since it is larger than the sum of its proper divisors (90833131).

1180830521 is an equidigital number, since it uses as much as digits as its factorization.

1180830521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90833130.

The product of its (nonzero) digits is 1920, while the sum is 29.

The square root of 1180830521 is about 34363.2146488072. The cubic root of 1180830521 is about 1056.9696650977.

The spelling of 1180830521 in words is "one billion, one hundred eighty million, eight hundred thirty thousand, five hundred twenty-one".