161840350 has 24 divisors (see below), whose sum is σ = 344027088. Its totient is φ = 55488000.

The previous prime is 161840339. The next prime is 161840369. The reversal of 161840350 is 53048161.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 230851 + ... + 231550.

It is an arithmetic number, because the mean of its divisors is an integer number (14334462).

Almost surely, 2^161840350 is an apocalyptic number.

161840350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161840350 is an abundant number, since it is smaller than the sum of its proper divisors (182186738).

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

161840350 is a wasteful number, since it uses less digits than its factorization.

161840350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462420 (or 462415 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 161840350 is about 12721.6488711173. The cubic root of 161840350 is about 544.9570428785.

The spelling of 161840350 in words is "one hundred sixty-one million, eight hundred forty thousand, three hundred fifty".