16913 has 4 divisors (see below), whose sum is σ = 18228. Its totient is φ = 15600.

The previous prime is 16903. The next prime is 16921. The reversal of 16913 is 31961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31961 = 31 ⋅1031.

It can be written as a sum of positive squares in 2 ways, for example, as 784 + 16129 = 28^2 + 127^2 .

It is not a de Polignac number, because 16913 - 2⁸ = 16657 is a prime.

It is a fibodiv number, since the Fibonacci-like sequence with seeds 169 and 13 contains 16913 itself.

It is a Duffinian number.

It is a Curzon number.

It is a nialpdrome in base 12 and base 16.

It is a zygodrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 638 + ... + 663.

It is an arithmetic number, because the mean of its divisors is an integer number (4557).

2¹⁶⁹¹³ is an apocalyptic number.

16913 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

16913 is a deficient number, since it is larger than the sum of its proper divisors (1315).

16913 is a wasteful number, since it uses less digits than its factorization.

16913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1314.

The product of its digits is 162, while the sum is 20.

The square root of 16913 is about 130.0499903883. The cubic root of 16913 is about 25.6688778290.

It can be divided in two parts, 169 and 13, that multiplied together give a cube (2197 = 13³).

The spelling of 16913 in words is "sixteen thousand, nine hundred thirteen".