16516923 has 4 divisors (see below), whose sum is σ = 22022568. Its totient is φ = 11011280.

The previous prime is 16516919. The next prime is 16516931. The reversal of 16516923 is 32961561.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16516923 - 2² = 16516919 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16516933) 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, 2752818 + ... + 2752823.

It is an arithmetic number, because the mean of its divisors is an integer number (5505642).

Almost surely, 2^16516923 is an apocalyptic number.

16516923 is a deficient number, since it is larger than the sum of its proper divisors (5505645).

16516923 is an equidigital number, since it uses as much as digits as its factorization.

16516923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5505644.

The product of its digits is 9720, while the sum is 33.

The square root of 16516923 is about 4064.1017457736. The cubic root of 16516923 is about 254.6691749872.

It can be divided in two parts, 1651692 and 3, that multiplied together give a square (4955076 = 2226²).

The spelling of 16516923 in words is "sixteen million, five hundred sixteen thousand, nine hundred twenty-three".