16169149 has 4 divisors (see below), whose sum is σ = 16181536. Its totient is φ = 16156764.

The previous prime is 16169143. The next prime is 16169183. The reversal of 16169149 is 94196161.

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, and also an emirpimes, since its reverse is a distinct semiprime: 94196161 = 149 ⋅632189.

It is a cyclic number.

It is not a de Polignac number, because 16169149 - 2¹³ = 16160957 is a prime.

It is a super-2 number, since 2×16169149² = 522882758768402, 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 (16169143) 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, 3969 + ... + 6934.

It is an arithmetic number, because the mean of its divisors is an integer number (4045384).

Almost surely, 2^16169149 is an apocalyptic number.

It is an amenable number.

16169149 is a deficient number, since it is larger than the sum of its proper divisors (12387).

16169149 is a wasteful number, since it uses less digits than its factorization.

16169149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12386.

The product of its digits is 11664, while the sum is 37.

The square root of 16169149 is about 4021.0880368378. The cubic root of 16169149 is about 252.8690756617.

The spelling of 16169149 in words is "sixteen million, one hundred sixty-nine thousand, one hundred forty-nine".