16130909 has 4 divisors (see below), whose sum is σ = 17079804. Its totient is φ = 15182016.

The previous prime is 16130903. The next prime is 16130911. The reversal of 16130909 is 90903161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90903161 = 43 ⋅2114027.

It can be written as a sum of positive squares in 2 ways, for example, as 8584900 + 7546009 = 2930^2 + 2747^2 .

It is a cyclic number.

It is not a de Polignac number, because 16130909 - 2⁴ = 16130893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16130903) 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, 474422 + ... + 474455.

It is an arithmetic number, because the mean of its divisors is an integer number (4269951).

Almost surely, 2^16130909 is an apocalyptic number.

It is an amenable number.

16130909 is a deficient number, since it is larger than the sum of its proper divisors (948895).

16130909 is an equidigital number, since it uses as much as digits as its factorization.

16130909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 948894.

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 16130909 is about 4016.3302902027. The cubic root of 16130909 is about 252.6695733784.

The spelling of 16130909 in words is "sixteen million, one hundred thirty thousand, nine hundred nine".