11800019 has 8 divisors (see below), whose sum is σ = 14711808. Its totient is φ = 9194760.

The previous prime is 11800001. The next prime is 11800037. The reversal of 11800019 is 91000811.

11800019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11800001) and next prime (11800037).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11800019 - 2⁸ = 11799763 is a prime.

It is a super-2 number, since 2×11800019² = 278480896800722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11800049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76547 + ... + 76700.

It is an arithmetic number, because the mean of its divisors is an integer number (1838976).

Almost surely, 2^11800019 is an apocalyptic number.

11800019 is a deficient number, since it is larger than the sum of its proper divisors (2911789).

11800019 is a wasteful number, since it uses less digits than its factorization.

11800019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153265.

The product of its (nonzero) digits is 72, while the sum is 20.

The square root of 11800019 is about 3435.1155730193. The cubic root of 11800019 is about 227.6639336886.

The spelling of 11800019 in words is "eleven million, eight hundred thousand, nineteen".