12018195 has 24 divisors (see below), whose sum is σ = 23808096. Its totient is φ = 5493888.

The previous prime is 12018187. The next prime is 12018211. The reversal of 12018195 is 59181021.

12018195 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12018195 - 2³ = 12018187 is a prime.

It is a super-2 number, since 2×12018195² = 288874022116050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18762 + ... + 19391.

It is an arithmetic number, because the mean of its divisors is an integer number (992004).

Almost surely, 2^12018195 is an apocalyptic number.

12018195 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12018195 is a deficient number, since it is larger than the sum of its proper divisors (11789901).

12018195 is a wasteful number, since it uses less digits than its factorization.

12018195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38171 (or 38168 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 27.

The square root of 12018195 is about 3466.7268424264. The cubic root of 12018195 is about 229.0585016087.

The spelling of 12018195 in words is "twelve million, eighteen thousand, one hundred ninety-five".