238578939648 has 1296 divisors, whose sum is σ = 897711849216. Its totient is φ = 62845009920.

The previous prime is 238578939617. The next prime is 238578939659. The reversal of 238578939648 is 846939875832.

238578939648 is a `hidden beast` number, since 2 + 3 + 8 + 578 + 9 + 3 + 9 + 6 + 48 = 666.

It is a tau number, because it is divible by the number of its divisors (1296).

It is a Harshad number since it is a multiple of its sum of digits (72).

Its product of digits (627056640) is a multiple of the sum of its prime factors (192).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 2874445015 + ... + 2874445097.

It is an arithmetic number, because the mean of its divisors is an integer number (692678896).

Almost surely, 2^238578939648 is an apocalyptic number.

238578939648 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 238578939648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (448855924608).

238578939648 is an abundant number, since it is smaller than the sum of its proper divisors (659132909568).

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

238578939648 is an equidigital number, since it uses as much as digits as its factorization.

238578939648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192 (or 159 counting only the distinct ones).

The product of its digits is 627056640, while the sum is 72.

The spelling of 238578939648 in words is "two hundred thirty-eight billion, five hundred seventy-eight million, nine hundred thirty-nine thousand, six hundred forty-eight".