161166804 has 48 divisors (see below), whose sum is σ = 390432000. Its totient is φ = 51682176.

The previous prime is 161166793. The next prime is 161166809. The reversal of 161166804 is 408661161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161166809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120789 + ... + 122115.

It is an arithmetic number, because the mean of its divisors is an integer number (8134000).

Almost surely, 2^161166804 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 161166804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195216000).

161166804 is an abundant number, since it is smaller than the sum of its proper divisors (229265196).

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

161166804 is a wasteful number, since it uses less digits than its factorization.

161166804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1712 (or 1710 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 161166804 is about 12695.1488372528. The cubic root of 161166804 is about 544.1999922473.

The spelling of 161166804 in words is "one hundred sixty-one million, one hundred sixty-six thousand, eight hundred four".