12190518 has 24 divisors (see below), whose sum is σ = 26539968. Its totient is φ = 4043952.

The previous prime is 12190517. The next prime is 12190537. The reversal of 12190518 is 81509121.

It is a junction number, because it is equal to n+sod(n) for n = 12190491 and 12190500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12190511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2496 + ... + 5532.

It is an arithmetic number, because the mean of its divisors is an integer number (1105832).

Almost surely, 2^12190518 is an apocalyptic number.

12190518 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12190518 is an abundant number, since it is smaller than the sum of its proper divisors (14349450).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12190518 is a wasteful number, since it uses less digits than its factorization.

12190518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3268 (or 3265 counting only the distinct ones).

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

The square root of 12190518 is about 3491.4922311241. The cubic root of 12190518 is about 230.1480961773.

Adding to 12190518 its reverse (81509121), we get a palindrome (93699639).

The spelling of 12190518 in words is "twelve million, one hundred ninety thousand, five hundred eighteen".