238601091 has 4 divisors (see below), whose sum is σ = 318134792. Its totient is φ = 159067392.

The previous prime is 238601063. The next prime is 238601131. The reversal of 238601091 is 190106832.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 238601091 - 2⁷ = 238600963 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (238601021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39766846 + ... + 39766851.

It is an arithmetic number, because the mean of its divisors is an integer number (79533698).

Almost surely, 2^238601091 is an apocalyptic number.

238601091 is a deficient number, since it is larger than the sum of its proper divisors (79533701).

238601091 is an equidigital number, since it uses as much as digits as its factorization.

238601091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79533700.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 238601091 is about 15446.7178067057. The cubic root of 238601091 is about 620.2367210875.

The spelling of 238601091 in words is "two hundred thirty-eight million, six hundred one thousand, ninety-one".