6449513772 has 48 divisors (see below), whose sum is σ = 16366970592. Its totient is φ = 1964812800.

The previous prime is 6449513753. The next prime is 6449513773. The reversal of 6449513772 is 2773159446.

It is not an unprimeable number, because it can be changed into a prime (6449513773) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188913 + ... + 220424.

It is an arithmetic number, because the mean of its divisors is an integer number (340978554).

Almost surely, 2^6449513772 is an apocalyptic number.

It is an amenable number.

6449513772 is an abundant number, since it is smaller than the sum of its proper divisors (9917456820).

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

6449513772 is a wasteful number, since it uses less digits than its factorization.

6449513772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409458 (or 409456 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 48.

The square root of 6449513772 is about 80308.8648406887. The cubic root of 6449513772 is about 1861.4112090567.

The spelling of 6449513772 in words is "six billion, four hundred forty-nine million, five hundred thirteen thousand, seven hundred seventy-two".