238945673829 has 16 divisors (see below), whose sum is σ = 325456358400. Its totient is φ = 155867792880.

The previous prime is 238945673821. The next prime is 238945673839. The reversal of 238945673829 is 928376549832.

It is not a de Polignac number, because 238945673829 - 2³ = 238945673821 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 238945673829.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238945673821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 338722 + ... + 769820.

It is an arithmetic number, because the mean of its divisors is an integer number (20341022400).

Almost surely, 2^238945673829 is an apocalyptic number.

It is an amenable number.

238945673829 is a deficient number, since it is larger than the sum of its proper divisors (86510684571).

238945673829 is a wasteful number, since it uses less digits than its factorization.

238945673829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435080.

The product of its digits is 156764160, while the sum is 66.

The spelling of 238945673829 in words is "two hundred thirty-eight billion, nine hundred forty-five million, six hundred seventy-three thousand, eight hundred twenty-nine".