1080041821 has 4 divisors (see below), whose sum is σ = 1081009852. Its totient is φ = 1079073792.

The previous prime is 1080041813. The next prime is 1080041839. The reversal of 1080041821 is 1281400801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1281400801 = 10429 ⋅122869.

It can be written as a sum of positive squares in 2 ways, for example, as 296321796 + 783720025 = 17214^2 + 27995^2 .

It is a cyclic number.

It is not a de Polignac number, because 1080041821 - 2³ = 1080041813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1080041021) 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, 482340 + ... + 484573.

It is an arithmetic number, because the mean of its divisors is an integer number (270252463).

Almost surely, 2^1080041821 is an apocalyptic number.

It is an amenable number.

1080041821 is a deficient number, since it is larger than the sum of its proper divisors (968031).

1080041821 is an equidigital number, since it uses as much as digits as its factorization.

1080041821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968030.

The product of its (nonzero) digits is 512, while the sum is 25.

The square root of 1080041821 is about 32863.9897304025. The cubic root of 1080041821 is about 1025.9988109655.

The spelling of 1080041821 in words is "one billion, eighty million, forty-one thousand, eight hundred twenty-one".