161834166 has 64 divisors (see below), whose sum is σ = 389188800. Its totient is φ = 49552128.

The previous prime is 161834161. The next prime is 161834171. The reversal of 161834166 is 661438161.

161834166 is a `hidden beast` number, since 1 + 618 + 34 + 1 + 6 + 6 = 666.

161834166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (161834161) and next prime (161834171).

It is a self number, because there is not a number n which added to its sum of digits gives 161834166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161834161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 188410 + ... + 189266.

It is an arithmetic number, because the mean of its divisors is an integer number (6081075).

Almost surely, 2^161834166 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161834166, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194594400).

161834166 is an abundant number, since it is smaller than the sum of its proper divisors (227354634).

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

161834166 is a wasteful number, since it uses less digits than its factorization.

161834166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150 (or 1144 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 161834166 is about 12721.4058185407. The cubic root of 161834166 is about 544.9501017639.

The spelling of 161834166 in words is "one hundred sixty-one million, eight hundred thirty-four thousand, one hundred sixty-six".