393218234125 has 8 divisors (see below), whose sum is σ = 490736356344. Its totient is φ = 314574587200.

The previous prime is 393218234063. The next prime is 393218234131. The reversal of 393218234125 is 521432812393.

It can be written as a sum of positive squares in 4 ways, for example, as 123755500521 + 269462733604 = 351789^2 + 519098^2 .

It is not a de Polignac number, because 393218234125 - 2⁹ = 393218233613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 1572872812 + ... + 1572873061.

It is an arithmetic number, because the mean of its divisors is an integer number (61342044543).

Almost surely, 2^393218234125 is an apocalyptic number.

It is an amenable number.

393218234125 is a deficient number, since it is larger than the sum of its proper divisors (97518122219).

393218234125 is an equidigital number, since it uses as much as digits as its factorization.

393218234125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3145745888 (or 3145745878 counting only the distinct ones).

The product of its digits is 311040, while the sum is 43.

The spelling of 393218234125 in words is "three hundred ninety-three billion, two hundred eighteen million, two hundred thirty-four thousand, one hundred twenty-five".