16331649 has 8 divisors (see below), whose sum is σ = 21794400. Its totient is φ = 10878336.

The previous prime is 16331641. The next prime is 16331671. The reversal of 16331649 is 94613361.

16331649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 16331649 - 2³ = 16331641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16331641) 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, 4702 + ... + 7400.

It is an arithmetic number, because the mean of its divisors is an integer number (2724300).

Almost surely, 2^16331649 is an apocalyptic number.

It is an amenable number.

16331649 is a deficient number, since it is larger than the sum of its proper divisors (5462751).

16331649 is a wasteful number, since it uses less digits than its factorization.

16331649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4719.

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

The square root of 16331649 is about 4041.2434967470. The cubic root of 16331649 is about 253.7133652532.

The spelling of 16331649 in words is "sixteen million, three hundred thirty-one thousand, six hundred forty-nine".