16494861 has 16 divisors (see below), whose sum is σ = 22531520. Its totient is φ = 10730880.

The previous prime is 16494857. The next prime is 16494871. The reversal of 16494861 is 16849461.

It is not a de Polignac number, because 16494861 - 2² = 16494857 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16494851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23526 + ... + 24216.

It is an arithmetic number, because the mean of its divisors is an integer number (1408220).

Almost surely, 2^16494861 is an apocalyptic number.

It is an amenable number.

16494861 is a deficient number, since it is larger than the sum of its proper divisors (6036659).

16494861 is a wasteful number, since it uses less digits than its factorization.

16494861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876.

The product of its digits is 41472, while the sum is 39.

The square root of 16494861 is about 4061.3865858842. The cubic root of 16494861 is about 254.5557354807. Note that the first 3 decimals are identical.

The spelling of 16494861 in words is "sixteen million, four hundred ninety-four thousand, eight hundred sixty-one".