16305913 has 4 divisors (see below), whose sum is σ = 17560228. Its totient is φ = 15051600.

The previous prime is 16305899. The next prime is 16305923. The reversal of 16305913 is 31950361.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9193024 + 7112889 = 3032^2 + 2667^2 .

It is a cyclic number.

It is not a de Polignac number, because 16305913 - 2¹⁷ = 16174841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16305923) 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, 627138 + ... + 627163.

It is an arithmetic number, because the mean of its divisors is an integer number (4390057).

Almost surely, 2^16305913 is an apocalyptic number.

16305913 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

16305913 is a deficient number, since it is larger than the sum of its proper divisors (1254315).

16305913 is a wasteful number, since it uses less digits than its factorization.

16305913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1254314.

The product of its (nonzero) digits is 2430, while the sum is 28.

The square root of 16305913 is about 4038.0580728860. The cubic root of 16305913 is about 253.5800249719.

The spelling of 16305913 in words is "sixteen million, three hundred five thousand, nine hundred thirteen".