16134509 has 4 divisors (see below), whose sum is σ = 16158816. Its totient is φ = 16110204.

The previous prime is 16134493. The next prime is 16134511. The reversal of 16134509 is 90543161.

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.

It is a cyclic number.

It is not a de Polignac number, because 16134509 - 2⁴ = 16134493 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 (16134529) 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, 11129 + ... + 12494.

It is an arithmetic number, because the mean of its divisors is an integer number (4039704).

Almost surely, 2^16134509 is an apocalyptic number.

It is an amenable number.

16134509 is a deficient number, since it is larger than the sum of its proper divisors (24307).

16134509 is an equidigital number, since it uses as much as digits as its factorization.

16134509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24306.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 16134509 is about 4016.7784355127. The cubic root of 16134509 is about 252.6883684094.

The spelling of 16134509 in words is "sixteen million, one hundred thirty-four thousand, five hundred nine".