16163749 has 8 divisors (see below), whose sum is σ = 18524160. Its totient is φ = 13816176.

The previous prime is 16163747. The next prime is 16163767. The reversal of 16163749 is 94736161.

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

It is a cyclic number.

It is not a de Polignac number, because 16163749 - 2¹ = 16163747 is a prime.

It is a super-2 number, since 2×16163749² = 522533563470002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16163747) 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, 334 + ... + 5695.

It is an arithmetic number, because the mean of its divisors is an integer number (2315520).

Almost surely, 2^16163749 is an apocalyptic number.

It is an amenable number.

16163749 is a deficient number, since it is larger than the sum of its proper divisors (2360411).

16163749 is an equidigital number, since it uses as much as digits as its factorization.

16163749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6419.

The product of its digits is 27216, while the sum is 37.

The square root of 16163749 is about 4020.4165207103. The cubic root of 16163749 is about 252.8409223547.

The spelling of 16163749 in words is "sixteen million, one hundred sixty-three thousand, seven hundred forty-nine".