14618205821 has 2 divisors, whose sum is σ = 14618205822. Its totient is φ = 14618205820.

The previous prime is 14618205809. The next prime is 14618205851. The reversal of 14618205821 is 12850281641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8315433721 + 6302772100 = 91189^2 + 79390^2 .

It is an emirp because it is prime and its reverse (12850281641) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 14618205821 - 2²⁶ = 14551096957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14618205851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7309102910 + 7309102911.

It is an arithmetic number, because the mean of its divisors is an integer number (7309102911).

Almost surely, 2^14618205821 is an apocalyptic number.

It is an amenable number.

14618205821 is a deficient number, since it is larger than the sum of its proper divisors (1).

14618205821 is an equidigital number, since it uses as much as digits as its factorization.

14618205821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30720, while the sum is 38.

It can be divided in two parts, 1461820 and 5821, that added together give a palindrome (1467641).

The spelling of 14618205821 in words is "fourteen billion, six hundred eighteen million, two hundred five thousand, eight hundred twenty-one".