161963200 has 84 divisors (see below), whose sum is σ = 455495152. Its totient is φ = 55526400.

The previous prime is 161963183. The next prime is 161963237. The reversal of 161963200 is 2369161.

It is a Harshad number since it is a multiple of its sum of digits (28).

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 11 ways as a sum of consecutive naturals, for example, 3970 + ... + 18430.

Almost surely, 2^161963200 is an apocalyptic number.

161963200 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 161963200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227747576).

161963200 is an abundant number, since it is smaller than the sum of its proper divisors (293531952).

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

161963200 is a wasteful number, since it uses less digits than its factorization.

161963200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14490 (or 14475 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 161963200 is about 12726.4763387200. The cubic root of 161963200 is about 545.0948969226.

The spelling of 161963200 in words is "one hundred sixty-one million, nine hundred sixty-three thousand, two hundred".