115800019 has 4 divisors (see below), whose sum is σ = 116150200. Its totient is φ = 115449840.

The previous prime is 115800011. The next prime is 115800029. The reversal of 115800019 is 910008511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 910008511 = 479 ⋅1899809.

It is a cyclic number.

It is not a de Polignac number, because 115800019 - 2³ = 115800011 is a prime.

It is a super-2 number, since 2×115800019² = 26819288800800722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 115799966 and 115800002.

It is not an unprimeable number, because it can be changed into a prime (115800011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174594 + ... + 175255.

It is an arithmetic number, because the mean of its divisors is an integer number (29037550).

Almost surely, 2^115800019 is an apocalyptic number.

115800019 is a deficient number, since it is larger than the sum of its proper divisors (350181).

115800019 is an equidigital number, since it uses as much as digits as its factorization.

115800019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350180.

The product of its (nonzero) digits is 360, while the sum is 25.

The square root of 115800019 is about 10761.0417246659. The cubic root of 115800019 is about 487.4194742295.

The spelling of 115800019 in words is "one hundred fifteen million, eight hundred thousand, nineteen".