238713868738 has 8 divisors (see below), whose sum is σ = 358104134988. Its totient is φ = 119345823744.

The previous prime is 238713868691. The next prime is 238713868807. The reversal of 238713868738 is 837868317832.

It can be written as a sum of positive squares in 2 ways, for example, as 170591302729 + 68122566009 = 413027^2 + 261003^2 .

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

It is a super-2 number, since 2×238713868738² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 238713868738.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5528431 + ... + 5571442.

Almost surely, 2^238713868738 is an apocalyptic number.

238713868738 is a deficient number, since it is larger than the sum of its proper divisors (119390266250).

238713868738 is a wasteful number, since it uses less digits than its factorization.

238713868738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11110628.

The product of its digits is 65028096, while the sum is 64.

The spelling of 238713868738 in words is "two hundred thirty-eight billion, seven hundred thirteen million, eight hundred sixty-eight thousand, seven hundred thirty-eight".