161880350 has 12 divisors (see below), whose sum is σ = 301097544. Its totient is φ = 64752120.

The previous prime is 161880343. The next prime is 161880359. The reversal of 161880350 is 53088161.

It is a super-2 number, since 2×161880350² = 52410495432245000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161880359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1618754 + ... + 1618853.

It is an arithmetic number, because the mean of its divisors is an integer number (25091462).

Almost surely, 2^161880350 is an apocalyptic number.

161880350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161880350 is a deficient number, since it is larger than the sum of its proper divisors (139217194).

161880350 is a wasteful number, since it uses less digits than its factorization.

161880350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3237619 (or 3237614 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 161880350 is about 12723.2208972414. The cubic root of 161880350 is about 545.0019358571.

The spelling of 161880350 in words is "one hundred sixty-one million, eight hundred eighty thousand, three hundred fifty".