238188819500420 has 24 divisors (see below), whose sum is σ = 517444676847000. Its totient is φ = 91990164772352.

The previous prime is 238188819500417. The next prime is 238188819500431. The reversal of 238188819500420 is 24005918881832.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 51661622510404 + 186527196990016 = 7187602^2 + 13657496^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 238188819500420.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 205335188645 + ... + 205335189804.

It is an arithmetic number, because the mean of its divisors is an integer number (21560194868625).

Almost surely, 2^{238188819500420} is an apocalyptic number.

238188819500420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

238188819500420 is an abundant number, since it is smaller than the sum of its proper divisors (279255857346580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

238188819500420 is a wasteful number, since it uses less digits than its factorization.

238188819500420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410670378487 (or 410670378485 counting only the distinct ones).

The product of its (nonzero) digits is 8847360, while the sum is 59.

The spelling of 238188819500420 in words is "two hundred thirty-eight trillion, one hundred eighty-eight billion, eight hundred nineteen million, five hundred thousand, four hundred twenty".