161404338 has 8 divisors (see below), whose sum is σ = 322808688. Its totient is φ = 53801444.

The previous prime is 161404333. The next prime is 161404339. The reversal of 161404338 is 833404161.

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

161404338 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (161404333) 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, 13450356 + ... + 13450367.

It is an arithmetic number, because the mean of its divisors is an integer number (40351086).

Almost surely, 2^161404338 is an apocalyptic number.

161404338 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161404338 is a wasteful number, since it uses less digits than its factorization.

161404338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26900728.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 161404338 is about 12704.5006985714. The cubic root of 161404338 is about 544.4672154883.

Adding to 161404338 its reverse (833404161), we get a palindrome (994808499).

The spelling of 161404338 in words is "one hundred sixty-one million, four hundred four thousand, three hundred thirty-eight".