16163149 has 4 divisors (see below), whose sum is σ = 16384636. Its totient is φ = 15941664.

The previous prime is 16163137. The next prime is 16163177. The reversal of 16163149 is 94136161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94136161 = 7 ⋅13448023.

It can be written as a sum of positive squares in 2 ways, for example, as 7193124 + 8970025 = 2682^2 + 2995^2 .

It is a cyclic number.

It is not a de Polignac number, because 16163149 - 2¹⁵ = 16130381 is a prime.

It is a super-2 number, since 2×16163149² = 522494771192402, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16163149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16163249) 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, 110634 + ... + 110779.

It is an arithmetic number, because the mean of its divisors is an integer number (4096159).

Almost surely, 2^16163149 is an apocalyptic number.

It is an amenable number.

16163149 is a deficient number, since it is larger than the sum of its proper divisors (221487).

16163149 is an equidigital number, since it uses as much as digits as its factorization.

16163149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221486.

The product of its digits is 3888, while the sum is 31.

The square root of 16163149 is about 4020.3419008836. The cubic root of 16163149 is about 252.8377938224.

The spelling of 16163149 in words is "sixteen million, one hundred sixty-three thousand, one hundred forty-nine".