238858713781 has 8 divisors (see below), whose sum is σ = 245449881504. Its totient is φ = 232274679120.

The previous prime is 238858713773. The next prime is 238858713839. The reversal of 238858713781 is 187317858832.

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

It is a cyclic number.

It is not a de Polignac number, because 238858713781 - 2³ = 238858713773 is a prime.

It is a super-2 number, since 2×238858713781² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238858713721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1715335 + ... + 1849348.

It is an arithmetic number, because the mean of its divisors is an integer number (30681235188).

Almost surely, 2^238858713781 is an apocalyptic number.

It is an amenable number.

238858713781 is a deficient number, since it is larger than the sum of its proper divisors (6591167723).

238858713781 is a wasteful number, since it uses less digits than its factorization.

238858713781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3566531.

The product of its digits is 18063360, while the sum is 61.

The spelling of 238858713781 in words is "two hundred thirty-eight billion, eight hundred fifty-eight million, seven hundred thirteen thousand, seven hundred eighty-one".