16838749 has 4 divisors (see below), whose sum is σ = 17002336. Its totient is φ = 16675164.

The previous prime is 16838747. The next prime is 16838753. The reversal of 16838749 is 94783861.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16838749 - 2¹ = 16838747 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16838699 and 16838708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16838747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81639 + ... + 81844.

It is an arithmetic number, because the mean of its divisors is an integer number (4250584).

Almost surely, 2^16838749 is an apocalyptic number.

It is an amenable number.

16838749 is a deficient number, since it is larger than the sum of its proper divisors (163587).

16838749 is a wasteful number, since it uses less digits than its factorization.

16838749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163586.

The product of its digits is 290304, while the sum is 46.

The square root of 16838749 is about 4103.5044778823. The cubic root of 16838749 is about 256.3125911748.

The spelling of 16838749 in words is "sixteen million, eight hundred thirty-eight thousand, seven hundred forty-nine".