238441794021 has 12 divisors (see below), whose sum is σ = 344429784972. Its totient is φ = 158954798976.

The previous prime is 238441794013. The next prime is 238441794061. The reversal of 238441794021 is 120497144832.

238441794021 is a `hidden beast` number, since 2 + 38 + 44 + 179 + 402 + 1 = 666.

238441794021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 47810009025 + 190631784996 = 218655^2 + 436614^2 .

It is not a de Polignac number, because 238441794021 - 2³ = 238441794013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238441794061) 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 in 11 ways as a sum of consecutive naturals, for example, 291246 + ... + 749471.

It is an arithmetic number, because the mean of its divisors is an integer number (28702482081).

Almost surely, 2^238441794021 is an apocalyptic number.

It is an amenable number.

238441794021 is a deficient number, since it is larger than the sum of its proper divisors (105987990951).

238441794021 is a wasteful number, since it uses less digits than its factorization.

238441794021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1066180 (or 1066177 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 238441794021 in words is "two hundred thirty-eight billion, four hundred forty-one million, seven hundred ninety-four thousand, twenty-one".