161384370 has 128 divisors (see below), whose sum is σ = 459841536. Its totient is φ = 35486976.

The previous prime is 161384369. The next prime is 161384381. The reversal of 161384370 is 73483161.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 819112 + ... + 819308.

It is an arithmetic number, because the mean of its divisors is an integer number (3592512).

Almost surely, 2^161384370 is an apocalyptic number.

161384370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 161384370, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229920768).

161384370 is an abundant number, since it is smaller than the sum of its proper divisors (298457166).

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

161384370 is a wasteful number, since it uses less digits than its factorization.

161384370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 161384370 is about 12703.7148110307. The cubic root of 161384370 is about 544.4447617966. Note that the first 3 decimals are identical.

The spelling of 161384370 in words is "one hundred sixty-one million, three hundred eighty-four thousand, three hundred seventy".