161794134 has 48 divisors (see below), whose sum is σ = 376311312. Its totient is φ = 50056704.

The previous prime is 161794091. The next prime is 161794147. The reversal of 161794134 is 431497161.

161794134 is a `hidden beast` number, since 1 + 617 + 9 + 4 + 1 + 34 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18717 + ... + 25959.

It is an arithmetic number, because the mean of its divisors is an integer number (7839819).

Almost surely, 2^161794134 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161794134, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188155656).

161794134 is an abundant number, since it is smaller than the sum of its proper divisors (214517178).

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

161794134 is a wasteful number, since it uses less digits than its factorization.

161794134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7341 (or 7338 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 161794134 is about 12719.8323102154. The cubic root of 161794134 is about 544.9051643195.

The spelling of 161794134 in words is "one hundred sixty-one million, seven hundred ninety-four thousand, one hundred thirty-four".