16493633 has 4 divisors (see below), whose sum is σ = 17762388. Its totient is φ = 15224880.

The previous prime is 16493623. The next prime is 16493641. The reversal of 16493633 is 33639461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33639461 = 5563 ⋅6047.

It can be written as a sum of positive squares in 2 ways, for example, as 9878449 + 6615184 = 3143^2 + 2572^2 .

It is a cyclic number.

It is not a de Polignac number, because 16493633 - 2⁸ = 16493377 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16493593 and 16493602.

It is not an unprimeable number, because it can be changed into a prime (16493623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 634358 + ... + 634383.

It is an arithmetic number, because the mean of its divisors is an integer number (4440597).

Almost surely, 2^16493633 is an apocalyptic number.

16493633 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

16493633 is a deficient number, since it is larger than the sum of its proper divisors (1268755).

16493633 is a wasteful number, since it uses less digits than its factorization.

16493633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1268754.

The product of its digits is 34992, while the sum is 35.

The square root of 16493633 is about 4061.2354031748. The cubic root of 16493633 is about 254.5494183172.

The spelling of 16493633 in words is "sixteen million, four hundred ninety-three thousand, six hundred thirty-three".