161285384 has 32 divisors (see below), whose sum is σ = 339837120. Its totient is φ = 71201856.

The previous prime is 161285381. The next prime is 161285393. The reversal of 161285384 is 483582161.

161285384 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (161285381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31322 + ... + 36105.

It is an arithmetic number, because the mean of its divisors is an integer number (10619910).

Almost surely, 2^161285384 is an apocalyptic number.

It is an amenable number.

161285384 is an abundant number, since it is smaller than the sum of its proper divisors (178551736).

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

161285384 is a wasteful number, since it uses less digits than its factorization.

161285384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67469 (or 67465 counting only the distinct ones).

The product of its digits is 46080, while the sum is 38.

The square root of 161285384 is about 12699.8182664163. The cubic root of 161285384 is about 544.3334262909. Note that the first 3 decimals are identical.

It can be divided in two parts, 16128 and 5384, that added together give a palindrome (21512).

The spelling of 161285384 in words is "one hundred sixty-one million, two hundred eighty-five thousand, three hundred eighty-four".