16132309 has 4 divisors (see below), whose sum is σ = 16167616. Its totient is φ = 16097004.

The previous prime is 16132297. The next prime is 16132313. The reversal of 16132309 is 90323161.

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: 90323161 = 1613 ⋅55997.

It is a cyclic number.

It is not a de Polignac number, because 16132309 - 2¹³ = 16124117 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 (16132399) 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, 16959 + ... + 17884.

It is an arithmetic number, because the mean of its divisors is an integer number (4041904).

Almost surely, 2^16132309 is an apocalyptic number.

It is an amenable number.

16132309 is a deficient number, since it is larger than the sum of its proper divisors (35307).

16132309 is an equidigital number, since it uses as much as digits as its factorization.

16132309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35306.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 16132309 is about 4016.5045748760. The cubic root of 16132309 is about 252.6768828893.

The spelling of 16132309 in words is "sixteen million, one hundred thirty-two thousand, three hundred nine".