6491888352 has 72 divisors (see below), whose sum is σ = 18736905096. Its totient is φ = 2131658496.

The previous prime is 6491888341. The next prime is 6491888357. The reversal of 6491888352 is 2538881946.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×6491888352² = 84289228749666551808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6491888357) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 148923 + ... + 187514.

It is an arithmetic number, because the mean of its divisors is an integer number (260234793).

Almost surely, 2^6491888352 is an apocalyptic number.

It is an amenable number.

6491888352 is an abundant number, since it is smaller than the sum of its proper divisors (12245016744).

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

6491888352 is a wasteful number, since it uses less digits than its factorization.

6491888352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336520 (or 336509 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 54.

The square root of 6491888352 is about 80572.2554729604. The cubic root of 6491888352 is about 1865.4789266135.

The spelling of 6491888352 in words is "six billion, four hundred ninety-one million, eight hundred eighty-eight thousand, three hundred fifty-two".