161134204 has 48 divisors (see below), whose sum is σ = 358235136. Its totient is φ = 61588800.

The previous prime is 161134199. The next prime is 161134217. The reversal of 161134204 is 402431161.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

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, 11389 + ... + 21259.

It is an arithmetic number, because the mean of its divisors is an integer number (7463232).

Almost surely, 2^161134204 is an apocalyptic number.

161134204 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161134204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179117568).

161134204 is an abundant number, since it is smaller than the sum of its proper divisors (197100932).

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

161134204 is a wasteful number, since it uses less digits than its factorization.

161134204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9946 (or 9944 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 161134204 is about 12693.8648173045. The cubic root of 161134204 is about 544.1632971057.

Adding to 161134204 its reverse (402431161), we get a palindrome (563565365).

The spelling of 161134204 in words is "one hundred sixty-one million, one hundred thirty-four thousand, two hundred four".