161134404 has 48 divisors (see below), whose sum is σ = 393093120. Its totient is φ = 51311520.

The previous prime is 161134399. The next prime is 161134417. The reversal of 161134404 is 404431161.

161134404 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26647 + ... + 32129.

It is an arithmetic number, because the mean of its divisors is an integer number (8189440).

Almost surely, 2^161134404 is an apocalyptic number.

It is an amenable number.

161134404 is an abundant number, since it is smaller than the sum of its proper divisors (231958716).

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

161134404 is a wasteful number, since it uses less digits than its factorization.

161134404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5600 (or 5598 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 161134404 is about 12693.8726951234. The cubic root of 161134404 is about 544.1635222444.

Adding to 161134404 its reverse (404431161), we get a palindrome (565565565).

The spelling of 161134404 in words is "one hundred sixty-one million, one hundred thirty-four thousand, four hundred four".