238795661 has 8 divisors (see below), whose sum is σ = 257665464. Its totient is φ = 219997440.

The previous prime is 238795643. The next prime is 238795681. The reversal of 238795661 is 166597832.

It can be written as a sum of positive squares in 4 ways, for example, as 13645636 + 225150025 = 3694^2 + 15005^2 .

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

It is not a de Polignac number, because 238795661 - 2¹⁰ = 238794637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238795631) 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, 10856 + ... + 24401.

It is an arithmetic number, because the mean of its divisors is an integer number (32208183).

Almost surely, 2^238795661 is an apocalyptic number.

It is an amenable number.

238795661 is a deficient number, since it is larger than the sum of its proper divisors (18869803).

238795661 is a wasteful number, since it uses less digits than its factorization.

238795661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35791.

The product of its digits is 544320, while the sum is 47.

The square root of 238795661 is about 15453.0146249850. The cubic root of 238795661 is about 620.4052683338.

The spelling of 238795661 in words is "two hundred thirty-eight million, seven hundred ninety-five thousand, six hundred sixty-one".