16451013 has 4 divisors (see below), whose sum is σ = 21934688. Its totient is φ = 10967340.

The previous prime is 16451011. The next prime is 16451047. The reversal of 16451013 is 31015461.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31015461 = 3 ⋅10338487.

It is not a de Polignac number, because 16451013 - 2¹ = 16451011 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16451011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2741833 + ... + 2741838.

It is an arithmetic number, because the mean of its divisors is an integer number (5483672).

Almost surely, 2^16451013 is an apocalyptic number.

It is an amenable number.

16451013 is a deficient number, since it is larger than the sum of its proper divisors (5483675).

16451013 is an equidigital number, since it uses as much as digits as its factorization.

16451013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5483674.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 16451013 is about 4055.9848372498. The cubic root of 16451013 is about 254.3299749667.

Adding to 16451013 its reverse (31015461), we get a palindrome (47466474).

The spelling of 16451013 in words is "sixteen million, four hundred fifty-one thousand, thirteen".