16138469 has 4 divisors (see below), whose sum is σ = 16200096. Its totient is φ = 16076844.

The previous prime is 16138403. The next prime is 16138477. The reversal of 16138469 is 96483161.

16138469 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 16138469 - 2¹⁶ = 16072933 is a prime.

It is a super-2 number, since 2×16138469² = 520900363327922, 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 (16138169) 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, 30419 + ... + 30944.

It is an arithmetic number, because the mean of its divisors is an integer number (4050024).

Almost surely, 2^16138469 is an apocalyptic number.

It is an amenable number.

16138469 is a deficient number, since it is larger than the sum of its proper divisors (61627).

16138469 is an equidigital number, since it uses as much as digits as its factorization.

16138469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61626.

The product of its digits is 31104, while the sum is 38.

The square root of 16138469 is about 4017.2713376121. The cubic root of 16138469 is about 252.7090397147.

The spelling of 16138469 in words is "sixteen million, one hundred thirty-eight thousand, four hundred sixty-nine".