16343649 has 24 divisors (see below), whose sum is σ = 27443520. Its totient is φ = 9178848.

The previous prime is 16343623. The next prime is 16343651. The reversal of 16343649 is 94634361.

16343649 is a `hidden beast` number, since 1 + 6 + 3 + 4 + 3 + 649 = 666.

16343649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16343649 - 2¹³ = 16335457 is a prime.

It is a super-2 number, since 2×16343649² = 534229725270402, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16343659) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1519 + ... + 5915.

It is an arithmetic number, because the mean of its divisors is an integer number (1143480).

Almost surely, 2^16343649 is an apocalyptic number.

It is an amenable number.

16343649 is a deficient number, since it is larger than the sum of its proper divisors (11099871).

16343649 is a wasteful number, since it uses less digits than its factorization.

16343649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4469 (or 4466 counting only the distinct ones).

The product of its digits is 46656, while the sum is 36.

The square root of 16343649 is about 4042.7279156530. The cubic root of 16343649 is about 253.7754903332.

The spelling of 16343649 in words is "sixteen million, three hundred forty-three thousand, six hundred forty-nine".