10218947 has 2 divisors, whose sum is σ = 10218948. Its totient is φ = 10218946.

The previous prime is 10218911. The next prime is 10218953. The reversal of 10218947 is 74981201.

10218947 is digitally balanced in base 3, because in such base 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 10218947 - 2¹² = 10214851 is a prime.

It is not a weakly prime, because it can be changed into another prime (10211947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5109473 + 5109474.

It is an arithmetic number, because the mean of its divisors is an integer number (5109474).

Almost surely, 2^10218947 is an apocalyptic number.

10218947 is a deficient number, since it is larger than the sum of its proper divisors (1).

10218947 is an equidigital number, since it uses as much as digits as its factorization.

10218947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 10218947 is about 3196.7087762259. The cubic root of 10218947 is about 217.0044878626.

The spelling of 10218947 in words is "ten million, two hundred eighteen thousand, nine hundred forty-seven".