14819643857 has 2 divisors, whose sum is σ = 14819643858. Its totient is φ = 14819643856.

The previous prime is 14819643833. The next prime is 14819643911. The reversal of 14819643857 is 75834691841.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14671023376 + 148620481 = 121124^2 + 12191^2 .

It is a cyclic number.

It is not a de Polignac number, because 14819643857 - 2⁶ = 14819643793 is a prime.

It is not a weakly prime, because it can be changed into another prime (14819643827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7409821928 + 7409821929.

It is an arithmetic number, because the mean of its divisors is an integer number (7409821929).

Almost surely, 2^14819643857 is an apocalyptic number.

It is an amenable number.

14819643857 is a deficient number, since it is larger than the sum of its proper divisors (1).

14819643857 is an equidigital number, since it uses as much as digits as its factorization.

14819643857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5806080, while the sum is 56.

The spelling of 14819643857 in words is "fourteen billion, eight hundred nineteen million, six hundred forty-three thousand, eight hundred fifty-seven".