16445413 has 4 divisors (see below), whose sum is σ = 16503808. Its totient is φ = 16387020.

The previous prime is 16445399. The next prime is 16445419. The reversal of 16445413 is 31454461.

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 a cyclic number.

It is not a de Polignac number, because 16445413 - 2⁵ = 16445381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16445419) 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, 28773 + ... + 29338.

It is an arithmetic number, because the mean of its divisors is an integer number (4125952).

Almost surely, 2^16445413 is an apocalyptic number.

It is an amenable number.

16445413 is a deficient number, since it is larger than the sum of its proper divisors (58395).

16445413 is an equidigital number, since it uses as much as digits as its factorization.

16445413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58394.

The product of its digits is 5760, while the sum is 28.

The square root of 16445413 is about 4055.2944406048. The cubic root of 16445413 is about 254.3011133297.

Adding to 16445413 its reverse (31454461), we get a palindrome (47899874).

The spelling of 16445413 in words is "sixteen million, four hundred forty-five thousand, four hundred thirteen".