12149813 has 8 divisors (see below), whose sum is σ = 13116768. Its totient is φ = 11187504.

The previous prime is 12149803. The next prime is 12149827. The reversal of 12149813 is 31894121.

12149813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12149813 - 2⁶ = 12149749 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 (12149803) 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, 5906 + ... + 7692.

It is an arithmetic number, because the mean of its divisors is an integer number (1639596).

Almost surely, 2^12149813 is an apocalyptic number.

12149813 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12149813 is a deficient number, since it is larger than the sum of its proper divisors (966955).

12149813 is a wasteful number, since it uses less digits than its factorization.

12149813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2323.

The product of its digits is 1728, while the sum is 29.

The square root of 12149813 is about 3485.6581874877. The cubic root of 12149813 is about 229.8916502893.

The spelling of 12149813 in words is "twelve million, one hundred forty-nine thousand, eight hundred thirteen".