2058188809 has 2 divisors, whose sum is σ = 2058188810. Its totient is φ = 2058188808.

The previous prime is 2058188801. The next prime is 2058188843. The reversal of 2058188809 is 9088818502.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1834237584 + 223951225 = 42828^2 + 14965^2 .

It is a cyclic number.

It is not a de Polignac number, because 2058188809 - 2³ = 2058188801 is a prime.

It is a super-2 number, since 2×2058188809² = 8472282346985676962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2058188801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1029094404 + 1029094405.

It is an arithmetic number, because the mean of its divisors is an integer number (1029094405).

Almost surely, 2^2058188809 is an apocalyptic number.

It is an amenable number.

2058188809 is a deficient number, since it is larger than the sum of its proper divisors (1).

2058188809 is an equidigital number, since it uses as much as digits as its factorization.

2058188809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 368640, while the sum is 49.

The square root of 2058188809 is about 45367.2658312136. The cubic root of 2058188809 is about 1272.0233127411.

The spelling of 2058188809 in words is "two billion, fifty-eight million, one hundred eighty-eight thousand, eight hundred nine".