6491612160 has 440 divisors, whose sum is σ = 25394852736. Its totient is φ = 1572618240.

The previous prime is 6491612137. The next prime is 6491612167. The reversal of 6491612160 is 612161946.

6491612160 is a `hidden beast` number, since 6 + 491 + 6 + 1 + 2 + 160 = 666.

It is a tau number, because it is divible by the number of its divisors (440).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (6491612167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 4561209 + ... + 4562631.

Almost surely, 2^6491612160 is an apocalyptic number.

6491612160 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 6491612160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12697426368).

6491612160 is an abundant number, since it is smaller than the sum of its proper divisors (18903240576).

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

6491612160 is a wasteful number, since it uses less digits than its factorization.

6491612160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1471 (or 1444 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 6491612160 is about 80570.5415148738. The cubic root of 6491612160 is about 1865.4524711543.

The spelling of 6491612160 in words is "six billion, four hundred ninety-one million, six hundred twelve thousand, one hundred sixty".