238358144820 has 24 divisors (see below), whose sum is σ = 667402805664. Its totient is φ = 63562171936.

The previous prime is 238358144819. The next prime is 238358144993. The reversal of 238358144820 is 28441853832.

It is a self number, because there is not a number n which added to its sum of digits gives 238358144820.

It is a congruent number.

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, 1986317814 + ... + 1986317933.

It is an arithmetic number, because the mean of its divisors is an integer number (27808450236).

Almost surely, 2^238358144820 is an apocalyptic number.

238358144820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

238358144820 is an abundant number, since it is smaller than the sum of its proper divisors (429044660844).

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

238358144820 is a wasteful number, since it uses less digits than its factorization.

238358144820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3972635759 (or 3972635757 counting only the distinct ones).

The product of its (nonzero) digits is 1474560, while the sum is 48.

The spelling of 238358144820 in words is "two hundred thirty-eight billion, three hundred fifty-eight million, one hundred forty-four thousand, eight hundred twenty".