16200109 has 4 divisors (see below), whose sum is σ = 16260160. Its totient is φ = 16140060.

The previous prime is 16200091. The next prime is 16200127. The reversal of 16200109 is 90100261.

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: 90100261 = 19 ⋅4742119.

It is an interprime number because it is at equal distance from previous prime (16200091) and next prime (16200127).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16200109 is a prime.

It is a super-2 number, since 2×16200109² = 524887063223762, 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 (16200209) 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, 29619 + ... + 30160.

It is an arithmetic number, because the mean of its divisors is an integer number (4065040).

Almost surely, 2^16200109 is an apocalyptic number.

It is an amenable number.

16200109 is a deficient number, since it is larger than the sum of its proper divisors (60051).

16200109 is an equidigital number, since it uses as much as digits as its factorization.

16200109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60050.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 16200109 is about 4024.9359001107. The cubic root of 16200109 is about 253.0303670841.

The spelling of 16200109 in words is "sixteen million, two hundred thousand, one hundred nine".