1449666816 has 288 divisors, whose sum is σ = 4450360320. Its totient is φ = 415506432.

The previous prime is 1449666809. The next prime is 1449666833. The reversal of 1449666816 is 6186669441.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13548235 + ... + 13548341.

It is an arithmetic number, because the mean of its divisors is an integer number (15452640).

Almost surely, 2^1449666816 is an apocalyptic number.

1449666816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1449666816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2225180160).

1449666816 is an abundant number, since it is smaller than the sum of its proper divisors (3000693504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1449666816 is a wasteful number, since it uses less digits than its factorization.

1449666816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221 (or 207 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 51.

The square root of 1449666816 is about 38074.4903577185. The cubic root of 1449666816 is about 1131.7644962854.

The spelling of 1449666816 in words is "one billion, four hundred forty-nine million, six hundred sixty-six thousand, eight hundred sixteen".