11800819 has 2 divisors, whose sum is σ = 11800820. Its totient is φ = 11800818.

The previous prime is 11800799. The next prime is 11800823. The reversal of 11800819 is 91800811.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11800819 - 2⁹ = 11800307 is a prime.

It is a super-2 number, since 2×11800819² = 278518658141522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11800889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5900409 + 5900410.

It is an arithmetic number, because the mean of its divisors is an integer number (5900410).

Almost surely, 2^11800819 is an apocalyptic number.

11800819 is a deficient number, since it is larger than the sum of its proper divisors (1).

11800819 is an equidigital number, since it uses as much as digits as its factorization.

11800819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 28.

The square root of 11800819 is about 3435.2320154540. The cubic root of 11800819 is about 227.6690785117.

The spelling of 11800819 in words is "eleven million, eight hundred thousand, eight hundred nineteen".