161740350 has 72 divisors (see below), whose sum is σ = 457437240. Its totient is φ = 40858560.

The previous prime is 161740309. The next prime is 161740351. The reversal of 161740350 is 53047161.

161740350 is a `hidden beast` number, since 1 + 617 + 40 + 3 + 5 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161740351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 909 + ... + 18008.

It is an arithmetic number, because the mean of its divisors is an integer number (6353295).

Almost surely, 2^161740350 is an apocalyptic number.

161740350 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 161740350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228718620).

161740350 is an abundant number, since it is smaller than the sum of its proper divisors (295696890).

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

161740350 is a wasteful number, since it uses less digits than its factorization.

161740350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18954 (or 18946 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 161740350 is about 12717.7179556711. The cubic root of 161740350 is about 544.8447780605.

The spelling of 161740350 in words is "one hundred sixty-one million, seven hundred forty thousand, three hundred fifty".