16913481 has 8 divisors (see below), whose sum is σ = 24286080. Its totient is φ = 10408272.

The previous prime is 16913461. The next prime is 16913483. The reversal of 16913481 is 18431961.

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

It is not a de Polignac number, because 16913481 - 2¹⁸ = 16651337 is a prime.

It is a super-2 number, since 2×16913481² = 572131679074722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16913483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216801 + ... + 216878.

It is an arithmetic number, because the mean of its divisors is an integer number (3035760).

Almost surely, 2^16913481 is an apocalyptic number.

It is an amenable number.

16913481 is a deficient number, since it is larger than the sum of its proper divisors (7372599).

16913481 is a wasteful number, since it uses less digits than its factorization.

16913481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433695.

The product of its digits is 5184, while the sum is 33.

The square root of 16913481 is about 4112.6002723338. The cubic root of 16913481 is about 256.6912116479.

The spelling of 16913481 in words is "sixteen million, nine hundred thirteen thousand, four hundred eighty-one".