138230161 has 8 divisors (see below), whose sum is σ = 144566784. Its totient is φ = 131920800.

The previous prime is 138230119. The next prime is 138230173. The reversal of 138230161 is 161032831.

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

It is a cyclic number.

It is not a de Polignac number, because 138230161 - 2¹⁷ = 138099089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138230101) 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 7 ways as a sum of consecutive naturals, for example, 3936 + ... + 17086.

It is an arithmetic number, because the mean of its divisors is an integer number (18070848).

Almost surely, 2^138230161 is an apocalyptic number.

It is an amenable number.

138230161 is a deficient number, since it is larger than the sum of its proper divisors (6336623).

138230161 is a wasteful number, since it uses less digits than its factorization.

138230161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13631.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 138230161 is about 11757.1323459422. The cubic root of 138230161 is about 517.0520582547.

Adding to 138230161 its reverse (161032831), we get a palindrome (299262992).

The spelling of 138230161 in words is "one hundred thirty-eight million, two hundred thirty thousand, one hundred sixty-one".