238204981 has 4 divisors (see below), whose sum is σ = 272234272. Its totient is φ = 204175692.

The previous prime is 238204963. The next prime is 238204999. The reversal of 238204981 is 189402832.

238204981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (238204963) and next prime (238204999).

It is not a de Polignac number, because 238204981 - 2¹⁵ = 238172213 is a prime.

It is a super-2 number, since 2×238204981² = 113483225946420722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 238204981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238204921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17014635 + ... + 17014648.

It is an arithmetic number, because the mean of its divisors is an integer number (68058568).

Almost surely, 2^238204981 is an apocalyptic number.

It is an amenable number.

238204981 is a deficient number, since it is larger than the sum of its proper divisors (34029291).

238204981 is an equidigital number, since it uses as much as digits as its factorization.

238204981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34029290.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 238204981 is about 15433.8906630830. The cubic root of 238204981 is about 619.8933054349.

The spelling of 238204981 in words is "two hundred thirty-eight million, two hundred four thousand, nine hundred eighty-one".