2182038821 has 2 divisors, whose sum is σ = 2182038822. Its totient is φ = 2182038820.

The previous prime is 2182038809. The next prime is 2182038841. The reversal of 2182038821 is 1288302812.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2050821796 + 131217025 = 45286^2 + 11455^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2182038821 is a prime.

It is a super-2 number, since 2×2182038821² = 9522586832702140082, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2182038841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1091019410 + 1091019411.

It is an arithmetic number, because the mean of its divisors is an integer number (1091019411).

Almost surely, 2^2182038821 is an apocalyptic number.

It is an amenable number.

2182038821 is a deficient number, since it is larger than the sum of its proper divisors (1).

2182038821 is an equidigital number, since it uses as much as digits as its factorization.

2182038821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12288, while the sum is 35.

The square root of 2182038821 is about 46712.2983913230. The cubic root of 2182038821 is about 1297.0423532431.

The spelling of 2182038821 in words is "two billion, one hundred eighty-two million, thirty-eight thousand, eight hundred twenty-one".