12641851 has 2 divisors, whose sum is σ = 12641852. Its totient is φ = 12641850.

The previous prime is 12641833. The next prime is 12641861. The reversal of 12641851 is 15814621.

12641851 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12641851 - 2⁵ = 12641819 is a prime.

It is not a weakly prime, because it can be changed into another prime (12641801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6320925 + 6320926.

It is an arithmetic number, because the mean of its divisors is an integer number (6320926).

Almost surely, 2^12641851 is an apocalyptic number.

12641851 is a deficient number, since it is larger than the sum of its proper divisors (1).

12641851 is an equidigital number, since it uses as much as digits as its factorization.

12641851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1920, while the sum is 28.

The square root of 12641851 is about 3555.5380746098. The cubic root of 12641851 is about 232.9540270451.

The spelling of 12641851 in words is "twelve million, six hundred forty-one thousand, eight hundred fifty-one".