16313649 has 8 divisors (see below), whose sum is σ = 23728992. Its totient is φ = 9887040.

The previous prime is 16313639. The next prime is 16313663. The reversal of 16313649 is 94631361.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16313649 - 2⁸ = 16313393 is a prime.

It is a super-2 number, since 2×16313649² = 532270287390402, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 494353 = 16313649 / (1 + 6 + 3 + 1 + 3 + 6 + 4 + 9).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16313639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247144 + ... + 247209.

It is an arithmetic number, because the mean of its divisors is an integer number (2966124).

Almost surely, 2^16313649 is an apocalyptic number.

It is an amenable number.

16313649 is a deficient number, since it is larger than the sum of its proper divisors (7415343).

16313649 is a wasteful number, since it uses less digits than its factorization.

16313649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494367.

The product of its digits is 11664, while the sum is 33.

The square root of 16313649 is about 4039.0158454752. The cubic root of 16313649 is about 253.6201205480.

The spelling of 16313649 in words is "sixteen million, three hundred thirteen thousand, six hundred forty-nine".