16923513 has 4 divisors (see below), whose sum is σ = 22564688. Its totient is φ = 11282340.

The previous prime is 16923481. The next prime is 16923521. The reversal of 16923513 is 31532961.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 16923513 - 2⁵ = 16923481 is a prime.

It is a super-2 number, since 2×16923513² = 572810584522338, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16923523) 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, 2820583 + ... + 2820588.

It is an arithmetic number, because the mean of its divisors is an integer number (5641172).

Almost surely, 2^16923513 is an apocalyptic number.

It is an amenable number.

16923513 is a deficient number, since it is larger than the sum of its proper divisors (5641175).

16923513 is an equidigital number, since it uses as much as digits as its factorization.

16923513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5641174.

The product of its digits is 4860, while the sum is 30.

The square root of 16923513 is about 4113.8197578406. The cubic root of 16923513 is about 256.7419525780.

The spelling of 16923513 in words is "sixteen million, nine hundred twenty-three thousand, five hundred thirteen".