16438077269 has 4 divisors (see below), whose sum is σ = 16438541196. Its totient is φ = 16437613344.

The previous prime is 16438077251. The next prime is 16438077287. The reversal of 16438077269 is 96277083461.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (16438077251) and next prime (16438077287).

It can be written as a sum of positive squares in 2 ways, for example, as 10301235025 + 6136842244 = 101495^2 + 78338^2 .

It is a cyclic number.

It is not a de Polignac number, because 16438077269 - 2⁸ = 16438077013 is a prime.

It is a super-2 number, since 2×16438077269² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16438077269.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16438077239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173984 + ... + 251289.

It is an arithmetic number, because the mean of its divisors is an integer number (4109635299).

Almost surely, 2^16438077269 is an apocalyptic number.

It is an amenable number.

16438077269 is a deficient number, since it is larger than the sum of its proper divisors (463927).

16438077269 is an equidigital number, since it uses as much as digits as its factorization.

16438077269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463926.

The product of its (nonzero) digits is 3048192, while the sum is 53.

The spelling of 16438077269 in words is "sixteen billion, four hundred thirty-eight million, seventy-seven thousand, two hundred sixty-nine".