12618851 has 4 divisors (see below), whose sum is σ = 14421552. Its totient is φ = 10816152.

The previous prime is 12618841. The next prime is 12618863. The reversal of 12618851 is 15881621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12618851 - 2⁶ = 12618787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12618841) 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, 901340 + ... + 901353.

It is an arithmetic number, because the mean of its divisors is an integer number (3605388).

Almost surely, 2^12618851 is an apocalyptic number.

12618851 is a deficient number, since it is larger than the sum of its proper divisors (1802701).

12618851 is an equidigital number, since it uses as much as digits as its factorization.

12618851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1802700.

The product of its digits is 3840, while the sum is 32.

The square root of 12618851 is about 3552.3022112427. The cubic root of 12618851 is about 232.8126660149.

The spelling of 12618851 in words is "twelve million, six hundred eighteen thousand, eight hundred fifty-one".