12018775 has 12 divisors (see below), whose sum is σ = 15045912. Its totient is φ = 9523040.

The previous prime is 12018749. The next prime is 12018817. The reversal of 12018775 is 57781021.

It is a happy number.

It is not a de Polignac number, because 12018775 - 2⁹ = 12018263 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 429 + ... + 4921.

It is an arithmetic number, because the mean of its divisors is an integer number (1253826).

Almost surely, 2^12018775 is an apocalyptic number.

12018775 is a deficient number, since it is larger than the sum of its proper divisors (3027137).

12018775 is a wasteful number, since it uses less digits than its factorization.

12018775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4610 (or 4605 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 31.

The square root of 12018775 is about 3466.8104938113. The cubic root of 12018775 is about 229.0621863493.

Adding to 12018775 its reverse (57781021), we get a palindrome (69799796).

The spelling of 12018775 in words is "twelve million, eighteen thousand, seven hundred seventy-five".