1804822013 has 2 divisors, whose sum is σ = 1804822014. Its totient is φ = 1804822012.

The previous prime is 1804821979. The next prime is 1804822021. The reversal of 1804822013 is 3102284081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 926410969 + 878411044 = 30437^2 + 29638^2 .

It is a cyclic number.

It is not a de Polignac number, because 1804822013 - 2²⁰ = 1803773437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1804822813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 902411006 + 902411007.

It is an arithmetic number, because the mean of its divisors is an integer number (902411007).

Almost surely, 2^1804822013 is an apocalyptic number.

It is an amenable number.

1804822013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1804822013 is an equidigital number, since it uses as much as digits as its factorization.

1804822013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 1804822013 is about 42483.1968312179. The cubic root of 1804822013 is about 1217.5256697333.

The spelling of 1804822013 in words is "one billion, eight hundred four million, eight hundred twenty-two thousand, thirteen".