12149518 has 8 divisors (see below), whose sum is σ = 18244800. Its totient is φ = 6067920.

The previous prime is 12149513. The next prime is 12149519. The reversal of 12149518 is 81594121.

It is a happy number.

12149518 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 super-2 number, since 2×12149518² = 295221575264648, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12149518.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12149513) 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, 798 + ... + 4993.

It is an arithmetic number, because the mean of its divisors is an integer number (2280600).

Almost surely, 2^12149518 is an apocalyptic number.

12149518 is a deficient number, since it is larger than the sum of its proper divisors (6095282).

12149518 is a wasteful number, since it uses less digits than its factorization.

12149518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6842.

The product of its digits is 2880, while the sum is 31.

The square root of 12149518 is about 3485.6158709760. The cubic root of 12149518 is about 229.8897896684.

The spelling of 12149518 in words is "twelve million, one hundred forty-nine thousand, five hundred eighteen".