161010238 has 4 divisors (see below), whose sum is σ = 241515360. Its totient is φ = 80505118.

The previous prime is 161010229. The next prime is 161010253. The reversal of 161010238 is 832010161.

161010238 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40252558 + ... + 40252561.

It is an arithmetic number, because the mean of its divisors is an integer number (60378840).

Almost surely, 2^161010238 is an apocalyptic number.

161010238 is a deficient number, since it is larger than the sum of its proper divisors (80505122).

161010238 is an equidigital number, since it uses as much as digits as its factorization.

161010238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80505121.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 161010238 is about 12688.9809677531. The cubic root of 161010238 is about 544.0237135532.

Adding to 161010238 its reverse (832010161), we get a palindrome (993020399).

The spelling of 161010238 in words is "one hundred sixty-one million, ten thousand, two hundred thirty-eight".