12019618 has 24 divisors (see below), whose sum is σ = 20001168. Its totient is φ = 5411952.

The previous prime is 12019597. The next prime is 12019619. The reversal of 12019618 is 81691021.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12019619) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14121 + ... + 14947.

It is an arithmetic number, because the mean of its divisors is an integer number (833382).

Almost surely, 2^12019618 is an apocalyptic number.

12019618 is a deficient number, since it is larger than the sum of its proper divisors (7981550).

12019618 is a wasteful number, since it uses less digits than its factorization.

12019618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 898 (or 885 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 12019618 is about 3466.9320731736. The cubic root of 12019618 is about 229.0675417179.

The spelling of 12019618 in words is "twelve million, nineteen thousand, six hundred eighteen".