161194800 has 120 divisors (see below), whose sum is σ = 556134544. Its totient is φ = 39674880.

The previous prime is 161194793. The next prime is 161194843. The reversal of 161194800 is 8491161.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 10434 + ... + 20766.

Almost surely, 2^161194800 is an apocalyptic number.

161194800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161194800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (278067272).

161194800 is an abundant number, since it is smaller than the sum of its proper divisors (394939744).

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

161194800 is a wasteful number, since it uses less digits than its factorization.

161194800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10367 (or 10356 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 161194800 is about 12696.2514152800. The cubic root of 161194800 is about 544.2315010951.

The spelling of 161194800 in words is "one hundred sixty-one million, one hundred ninety-four thousand, eight hundred".