161489200 has 60 divisors (see below), whose sum is σ = 389243440. Its totient is φ = 64385280.

The previous prime is 161489183. The next prime is 161489219. The reversal of 161489200 is 2984161.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 194386 + ... + 195214.

Almost surely, 2^161489200 is an apocalyptic number.

161489200 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 161489200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194621720).

161489200 is an abundant number, since it is smaller than the sum of its proper divisors (227754240).

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

161489200 is a wasteful number, since it uses less digits than its factorization.

161489200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1334 (or 1323 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 161489200 is about 12707.8400997180. The cubic root of 161489200 is about 544.5626207751.

The spelling of 161489200 in words is "one hundred sixty-one million, four hundred eighty-nine thousand, two hundred".