16313845 has 4 divisors (see below), whose sum is σ = 19576620. Its totient is φ = 13051072.

The previous prime is 16313827. The next prime is 16313849. The reversal of 16313845 is 54831361.

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 5803281 + 10510564 = 2409^2 + 3242^2 .

It is a cyclic number.

It is not a de Polignac number, because 16313845 - 2⁹ = 16313333 is a prime.

It is a super-2 number, since 2×16313845² = 532283077368050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16313849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1631380 + ... + 1631389.

It is an arithmetic number, because the mean of its divisors is an integer number (4894155).

Almost surely, 2^16313845 is an apocalyptic number.

It is an amenable number.

16313845 is a deficient number, since it is larger than the sum of its proper divisors (3262775).

16313845 is an equidigital number, since it uses as much as digits as its factorization.

16313845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3262774.

The product of its digits is 8640, while the sum is 31.

The square root of 16313845 is about 4039.0401087387. The cubic root of 16313845 is about 253.6211362485.

It can be divided in two parts, 1631 and 3845, that added together give a square (5476 = 74²).

The spelling of 16313845 in words is "sixteen million, three hundred thirteen thousand, eight hundred forty-five".