6494249520 has 400 divisors, whose sum is σ = 25408373760. Its totient is φ = 1523059200.

The previous prime is 6494249519. The next prime is 6494249563. The reversal of 6494249520 is 259424946.

6494249520 is a `hidden beast` number, since 6 + 49 + 42 + 49 + 520 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2208211 + ... + 2211149.

Almost surely, 2^6494249520 is an apocalyptic number.

6494249520 is a gapful number since it is divisible by the number (60) 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 6494249520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12704186880).

6494249520 is an abundant number, since it is smaller than the sum of its proper divisors (18914124240).

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

6494249520 is a wasteful number, since it uses less digits than its factorization.

6494249520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3006 (or 2991 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The square root of 6494249520 is about 80586.9066288066. The cubic root of 6494249520 is about 1865.7050639613.

The spelling of 6494249520 in words is "six billion, four hundred ninety-four million, two hundred forty-nine thousand, five hundred twenty".