161894050 has 24 divisors (see below), whose sum is σ = 301515300. Its totient is φ = 64673280.

The previous prime is 161894027. The next prime is 161894081. The reversal of 161894050 is 50498161.

It can be written as a sum of positive squares in 6 ways, for example, as 48066489 + 113827561 = 6933^2 + 10669^2 .

It is a junction number, because it is equal to n+sod(n) for n = 161893997 and 161894015.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 48846 + ... + 52054.

Almost surely, 2^161894050 is an apocalyptic number.

161894050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161894050 is a deficient number, since it is larger than the sum of its proper divisors (139621250).

161894050 is a wasteful number, since it uses less digits than its factorization.

161894050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4230 (or 4225 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 161894050 is about 12723.7592715361. The cubic root of 161894050 is about 545.0173100021.

The spelling of 161894050 in words is "one hundred sixty-one million, eight hundred ninety-four thousand, fifty".