238018427845 has 12 divisors (see below), whose sum is σ = 313948274220. Its totient is φ = 173104310720.

The previous prime is 238018427827. The next prime is 238018427851. The reversal of 238018427845 is 548724810832.

It can be written as a sum of positive squares in 2 ways, for example, as 118557639684 + 119460788161 = 344322^2 + 345631^2 .

It is a de Polignac number, because none of the positive numbers 2^k-238018427845 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 238018427792 and 238018427801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 196708840 + ... + 196710049.

It is an arithmetic number, because the mean of its divisors is an integer number (26162356185).

Almost surely, 2^238018427845 is an apocalyptic number.

It is an amenable number.

238018427845 is a deficient number, since it is larger than the sum of its proper divisors (75929846375).

238018427845 is a wasteful number, since it uses less digits than its factorization.

238018427845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393418916 (or 393418905 counting only the distinct ones).

The product of its (nonzero) digits is 3440640, while the sum is 52.

The spelling of 238018427845 in words is "two hundred thirty-eight billion, eighteen million, four hundred twenty-seven thousand, eight hundred forty-five".