238470161 has 8 divisors (see below), whose sum is σ = 251349480. Its totient is φ = 225901312.

The previous prime is 238470157. The next prime is 238470163. The reversal of 238470161 is 161074832.

It can be written as a sum of positive squares in 4 ways, for example, as 93412225 + 145057936 = 9665^2 + 12044^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 238470161 - 2² = 238470157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (238470163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76040 + ... + 79113.

It is an arithmetic number, because the mean of its divisors is an integer number (31418685).

Almost surely, 2^238470161 is an apocalyptic number.

It is an amenable number.

238470161 is a deficient number, since it is larger than the sum of its proper divisors (12879319).

238470161 is a wasteful number, since it uses less digits than its factorization.

238470161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155235.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 238470161 is about 15442.4791079671. The cubic root of 238470161 is about 620.1232507313.

The spelling of 238470161 in words is "two hundred thirty-eight million, four hundred seventy thousand, one hundred sixty-one".