19450 has 12 divisors (see below), whose sum is σ = 36270.
Its totient is φ = 7760.
The previous prime is 19447. The next prime is 19457. The reversal of 19450 is 5491.
It can be written as a sum of positive squares in 3 ways, for example, as 11881 + 7569 = 109^2 + 87^2
It is not an unprimeable number, because it can be changed into a prime (19457) by changing a digit.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 145 + ... + 244.
219450 is an apocalyptic number.
19450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
19450 is a deficient number, since it is larger than the sum of its proper divisors (16820).
19450 is a wasteful number, since it uses less digits than its factorization.
19450 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 401 (or 396 counting only the distinct ones).
The product of its (nonzero) digits is 180, while the sum is 19.
The square root of 19450 is about 139.4632568098.
The cubic root of 19450 is about 26.8930381877.
The spelling of 19450 in words is "nineteen thousand, four hundred fifty".