16397183449 has 4 divisors (see below), whose sum is σ = 16397893120. Its totient is φ = 16396473780.

The previous prime is 16397183443. The next prime is 16397183459. The reversal of 16397183449 is 94438179361.

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 16397183449 - 2¹¹ = 16397181401 is a prime.

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 16397183449.

It is not an unprimeable number, because it can be changed into a prime (16397183443) 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, 318969 + ... + 366790.

It is an arithmetic number, because the mean of its divisors is an integer number (4099473280).

Almost surely, 2^16397183449 is an apocalyptic number.

It is an amenable number.

16397183449 is a deficient number, since it is larger than the sum of its proper divisors (709671).

16397183449 is an equidigital number, since it uses as much as digits as its factorization.

16397183449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709670.

The product of its digits is 3919104, while the sum is 55.

The spelling of 16397183449 in words is "sixteen billion, three hundred ninety-seven million, one hundred eighty-three thousand, four hundred forty-nine".