12191653 has 4 divisors (see below), whose sum is σ = 12215488. Its totient is φ = 12167820.

The previous prime is 12191651. The next prime is 12191681. The reversal of 12191653 is 35619121.

12191653 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12191653 - 2¹ = 12191651 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12191651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11133 + ... + 12178.

It is an arithmetic number, because the mean of its divisors is an integer number (3053872).

Almost surely, 2^12191653 is an apocalyptic number.

It is an amenable number.

12191653 is a deficient number, since it is larger than the sum of its proper divisors (23835).

12191653 is an equidigital number, since it uses as much as digits as its factorization.

12191653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23834.

The product of its digits is 1620, while the sum is 28.

The square root of 12191653 is about 3491.6547652940. The cubic root of 12191653 is about 230.1552386133.

The spelling of 12191653 in words is "twelve million, one hundred ninety-one thousand, six hundred fifty-three".