238378137 has 4 divisors (see below), whose sum is σ = 317837520. Its totient is φ = 158918756.

The previous prime is 238378109. The next prime is 238378139. The reversal of 238378137 is 731873832.

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 a cyclic number.

It is not a de Polignac number, because 238378137 - 2⁶ = 238378073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (238378139) 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, 39729687 + ... + 39729692.

It is an arithmetic number, because the mean of its divisors is an integer number (79459380).

Almost surely, 2^238378137 is an apocalyptic number.

It is an amenable number.

238378137 is a deficient number, since it is larger than the sum of its proper divisors (79459383).

238378137 is an equidigital number, since it uses as much as digits as its factorization.

238378137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79459382.

The product of its digits is 169344, while the sum is 42.

The square root of 238378137 is about 15439.4992470611. The cubic root of 238378137 is about 620.0434733651.

The spelling of 238378137 in words is "two hundred thirty-eight million, three hundred seventy-eight thousand, one hundred thirty-seven".