238812051856 has 135 divisors (see below), whose sum is σ = 557153245323. Its totient is φ = 98870546880.

The previous prime is 238812051791. The next prime is 238812051911. The reversal of 238812051856 is 658150218832.

The square root of 238812051856 is 488684.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×238812051856² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 424177431 + ... + 424177993.

Almost surely, 2^238812051856 is an apocalyptic number.

238812051856 is the 488684-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 238812051856

238812051856 is an abundant number, since it is smaller than the sum of its proper divisors (318341193467).

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

238812051856 is an frugal number, since it uses more digits than its factorization.

238812051856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1210 (or 603 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 49.

Multiplying 238812051856 by its sum of digits (49), we get a square (11701790540944 = 3420788²).

238812051856 divided by its sum of digits (49) gives a square (4873715344 = 69812²).

The spelling of 238812051856 in words is "two hundred thirty-eight billion, eight hundred twelve million, fifty-one thousand, eight hundred fifty-six".