238920193 has 32 divisors (see below), whose sum is σ = 278691840. Its totient is φ = 203316480.

The previous prime is 238920179. The next prime is 238920229. The reversal of 238920193 is 391029832.

It is a cyclic number.

It is not a de Polignac number, because 238920193 - 2¹⁷ = 238789121 is a prime.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (238920163) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1071280 + ... + 1071502.

It is an arithmetic number, because the mean of its divisors is an integer number (8709120).

Almost surely, 2^238920193 is an apocalyptic number.

It is an amenable number.

238920193 is a deficient number, since it is larger than the sum of its proper divisors (39771647).

238920193 is a wasteful number, since it uses less digits than its factorization.

238920193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 238920193 is about 15457.0434753869. The cubic root of 238920193 is about 620.5130967620.

The spelling of 238920193 in words is "two hundred thirty-eight million, nine hundred twenty thousand, one hundred ninety-three".