234189005 has 4 divisors (see below), whose sum is σ = 281026812. Its totient is φ = 187351200.

The previous prime is 234189001. The next prime is 234189017. The reversal of 234189005 is 500981432.

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

It can be written as a sum of positive squares in 2 ways, for example, as 148181929 + 86007076 = 12173^2 + 9274^2 .

It is not a de Polignac number, because 234189005 - 2² = 234189001 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 (234189001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23418896 + ... + 23418905.

It is an arithmetic number, because the mean of its divisors is an integer number (70256703).

Almost surely, 2^234189005 is an apocalyptic number.

It is an amenable number.

234189005 is a deficient number, since it is larger than the sum of its proper divisors (46837807).

234189005 is an equidigital number, since it uses as much as digits as its factorization.

234189005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46837806.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 234189005 is about 15303.2351154911. The cubic root of 234189005 is about 616.3898809800.

It can be divided in two parts, 23418 and 9005, that added together give a palindrome (32423).

The spelling of 234189005 in words is "two hundred thirty-four million, one hundred eighty-nine thousand, five".