238123862381 has 8 divisors (see below), whose sum is σ = 238311005880. Its totient is φ = 237936771072.

The previous prime is 238123862281. The next prime is 238123862387. The reversal of 238123862381 is 183268321832.

It can be written as a sum of positive squares in 4 ways, for example, as 90751562500 + 147372299881 = 301250^2 + 383891^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238123862381 is a prime.

It is a super-2 number, since 2×238123862381² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238123862387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17337725 + ... + 17351453.

It is an arithmetic number, because the mean of its divisors is an integer number (29788875735).

Almost surely, 2^238123862381 is an apocalyptic number.

It is an amenable number.

238123862381 is a deficient number, since it is larger than the sum of its proper divisors (187143499).

238123862381 is a wasteful number, since it uses less digits than its factorization.

238123862381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26095.

The product of its digits is 663552, while the sum is 47.

The spelling of 238123862381 in words is "two hundred thirty-eight billion, one hundred twenty-three million, eight hundred sixty-two thousand, three hundred eighty-one".