161134430 has 16 divisors (see below), whose sum is σ = 290463840. Its totient is φ = 64360032.

The previous prime is 161134423. The next prime is 161134439. The reversal of 161134430 is 34431161.

It is a junction number, because it is equal to n+sod(n) for n = 161134396 and 161134405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161134439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4274 + ... + 18453.

It is an arithmetic number, because the mean of its divisors is an integer number (18153990).

Almost surely, 2^161134430 is an apocalyptic number.

161134430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161134430 is a deficient number, since it is larger than the sum of its proper divisors (129329410).

161134430 is a wasteful number, since it uses less digits than its factorization.

161134430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23443.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 161134430 is about 12693.8737192395. The cubic root of 161134430 is about 544.1635515124.

Adding to 161134430 its reverse (34431161), we get a palindrome (195565591).

The spelling of 161134430 in words is "one hundred sixty-one million, one hundred thirty-four thousand, four hundred thirty".