161308134 has 48 divisors (see below), whose sum is σ = 378705600. Its totient is φ = 49621104.

The previous prime is 161308129. The next prime is 161308151. The reversal of 161308134 is 431803161.

It is a junction number, because it is equal to n+sod(n) for n = 161308098 and 161308107.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 37507 + ... + 41585.

It is an arithmetic number, because the mean of its divisors is an integer number (7889700).

Almost surely, 2^161308134 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161308134, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189352800).

161308134 is an abundant number, since it is smaller than the sum of its proper divisors (217397466).

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

161308134 is a wasteful number, since it uses less digits than its factorization.

161308134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4126 (or 4097 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 161308134 is about 12700.7139169418. The cubic root of 161308134 is about 544.3590186145.

The spelling of 161308134 in words is "one hundred sixty-one million, three hundred eight thousand, one hundred thirty-four".