6491309460 has 48 divisors (see below), whose sum is σ = 18280757376. Its totient is φ = 1721007232.

The previous prime is 6491309443. The next prime is 6491309501. The reversal of 6491309460 is 649031946.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 302304 + ... + 323063.

It is an arithmetic number, because the mean of its divisors is an integer number (380849112).

Almost surely, 2^6491309460 is an apocalyptic number.

6491309460 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6491309460 is an abundant number, since it is smaller than the sum of its proper divisors (11789447916).

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

6491309460 is a wasteful number, since it uses less digits than its factorization.

6491309460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625552 (or 625550 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 6491309460 is about 80568.6630148472. The cubic root of 6491309460 is about 1865.4234757252.

The spelling of 6491309460 in words is "six billion, four hundred ninety-one million, three hundred nine thousand, four hundred sixty".