161384616 has 64 divisors (see below), whose sum is σ = 450542400. Its totient is φ = 53524800.

The previous prime is 161384611. The next prime is 161384617. The reversal of 161384616 is 616483161.

161384616 is a `hidden beast` number, since 1 + 6 + 1 + 38 + 4 + 616 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (161384611) 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, 43806 + ... + 47346.

It is an arithmetic number, because the mean of its divisors is an integer number (7039725).

Almost surely, 2^161384616 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 161384616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225271200).

161384616 is an abundant number, since it is smaller than the sum of its proper divisors (289157784).

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

161384616 is a wasteful number, since it uses less digits than its factorization.

161384616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3767 (or 3757 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 161384616 is about 12703.7244932343. The cubic root of 161384616 is about 544.4450384309.

The spelling of 161384616 in words is "one hundred sixty-one million, three hundred eighty-four thousand, six hundred sixteen".