12191613 has 8 divisors (see below), whose sum is σ = 18577728. Its totient is φ = 6966624.

The previous prime is 12191593. The next prime is 12191651. The reversal of 12191613 is 31619121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12191613 - 2¹³ = 12183421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12191693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 290256 + ... + 290297.

It is an arithmetic number, because the mean of its divisors is an integer number (2322216).

Almost surely, 2^12191613 is an apocalyptic number.

It is an amenable number.

12191613 is a deficient number, since it is larger than the sum of its proper divisors (6386115).

12191613 is an equidigital number, since it uses as much as digits as its factorization.

12191613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580563.

The product of its digits is 324, while the sum is 24.

The square root of 12191613 is about 3491.6490373461. The cubic root of 12191613 is about 230.1549869050.

The spelling of 12191613 in words is "twelve million, one hundred ninety-one thousand, six hundred thirteen".