161166104 has 32 divisors (see below), whose sum is σ = 332940240. Its totient is φ = 72528000.

The previous prime is 161166101. The next prime is 161166127. The reversal of 161166104 is 401661161.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161166101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179 + ... + 17954.

Almost surely, 2^161166104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161166104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (166470120).

161166104 is an abundant number, since it is smaller than the sum of its proper divisors (171774136).

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

161166104 is a wasteful number, since it uses less digits than its factorization.

161166104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18251 (or 18247 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 161166104 is about 12695.1212676366. The cubic root of 161166104 is about 544.1992043668.

The spelling of 161166104 in words is "one hundred sixty-one million, one hundred sixty-six thousand, one hundred four".