19954 has 8 divisors (see below), whose sum is σ = 32688. Its totient is φ = 9060.

The previous prime is 19949. The next prime is 19961. The reversal of 19954 is 45991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 432 + ... + 475.

It is an arithmetic number, because the mean of its divisors is an integer number (4086).

2¹⁹⁹⁵⁴ is an apocalyptic number.

19954 is a deficient number, since it is larger than the sum of its proper divisors (12734).

19954 is a wasteful number, since it uses less digits than its factorization.

19954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920.

The product of its digits is 1620, while the sum is 28.

The square root of 19954 is about 141.2586280551. The cubic root of 19954 is about 27.1233496557.

It can be divided in two parts, 199 and 54, that added together give a triangular number (253 = T₂₂).

The spelling of 19954 in words is "nineteen thousand, nine hundred fifty-four".