1801000115 has 4 divisors (see below), whose sum is σ = 2161200144. Its totient is φ = 1440800088.

The previous prime is 1801000057. The next prime is 1801000121. The reversal of 1801000115 is 5110001081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5110001081 = 431 ⋅11856151.

It is a cyclic number.

It is not a de Polignac number, because 1801000115 - 2⁸ = 1800999859 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1801000093 and 1801000102.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180100007 + ... + 180100016.

It is an arithmetic number, because the mean of its divisors is an integer number (540300036).

Almost surely, 2^1801000115 is an apocalyptic number.

1801000115 is a deficient number, since it is larger than the sum of its proper divisors (360200029).

1801000115 is an equidigital number, since it uses as much as digits as its factorization.

1801000115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360200028.

The product of its (nonzero) digits is 40, while the sum is 17.

The square root of 1801000115 is about 42438.1917027576. The cubic root of 1801000115 is about 1216.6656500481.

Adding to 1801000115 its reverse (5110001081), we get a palindrome (6911001196).

The spelling of 1801000115 in words is "one billion, eight hundred one million, one hundred fifteen", and thus it is an aban number.