238347642985 has 16 divisors (see below), whose sum is σ = 287973234432. Its totient is φ = 189378504000.

The previous prime is 238347642943. The next prime is 238347643031. The reversal of 238347642985 is 589246743832.

It is not a de Polignac number, because 238347642985 - 2¹⁹ = 238347118697 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154060 + ... + 707410.

It is an arithmetic number, because the mean of its divisors is an integer number (17998327152).

Almost surely, 2^238347642985 is an apocalyptic number.

It is an amenable number.

238347642985 is a deficient number, since it is larger than the sum of its proper divisors (49625591447).

238347642985 is a wasteful number, since it uses less digits than its factorization.

238347642985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553944.

The product of its digits is 69672960, while the sum is 61.

The spelling of 238347642985 in words is "two hundred thirty-eight billion, three hundred forty-seven million, six hundred forty-two thousand, nine hundred eighty-five".