1879085821 has 2 divisors, whose sum is σ = 1879085822. Its totient is φ = 1879085820.

The previous prime is 1879085779. The next prime is 1879085833. The reversal of 1879085821 is 1285809781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1832696100 + 46389721 = 42810^2 + 6811^2 .

It is a cyclic number.

It is not a de Polignac number, because 1879085821 - 2²⁷ = 1744868093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1879085861) 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 as a sum of consecutive naturals, namely, 939542910 + 939542911.

It is an arithmetic number, because the mean of its divisors is an integer number (939542911).

Almost surely, 2^1879085821 is an apocalyptic number.

It is an amenable number.

1879085821 is a deficient number, since it is larger than the sum of its proper divisors (1).

1879085821 is an equidigital number, since it uses as much as digits as its factorization.

1879085821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 322560, while the sum is 49.

The square root of 1879085821 is about 43348.4235122801. The cubic root of 1879085821 is about 1234.0010763370.

The spelling of 1879085821 in words is "one billion, eight hundred seventy-nine million, eighty-five thousand, eight hundred twenty-one".