16449187749 has 8 divisors (see below), whose sum is σ = 22346066592. Its totient is φ = 10759217040.

The previous prime is 16449187739. The next prime is 16449187801. The reversal of 16449187749 is 94778194461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16449187749 - 2¹³ = 16449179557 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16449187692 and 16449187701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16449187739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51726847 + ... + 51727164.

It is an arithmetic number, because the mean of its divisors is an integer number (2793258324).

Almost surely, 2^16449187749 is an apocalyptic number.

It is an amenable number.

16449187749 is a deficient number, since it is larger than the sum of its proper divisors (5896878843).

16449187749 is a wasteful number, since it uses less digits than its factorization.

16449187749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103454067.

The product of its digits is 12192768, while the sum is 60.

The spelling of 16449187749 in words is "sixteen billion, four hundred forty-nine million, one hundred eighty-seven thousand, seven hundred forty-nine".