6491400030 has 144 divisors (see below), whose sum is σ = 17504549712. Its totient is φ = 1668864000.

The previous prime is 6491400023. The next prime is 6491400089. The reversal of 6491400030 is 300041946.

6491400030 is a `hidden beast` number, since 649 + 14 + 0 + 0 + 0 + 3 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 6491399967 and 6491400003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 16187830 + ... + 16188230.

It is an arithmetic number, because the mean of its divisors is an integer number (121559373).

Almost surely, 2^6491400030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6491400030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8752274856).

6491400030 is an abundant number, since it is smaller than the sum of its proper divisors (11013149682).

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

6491400030 is a wasteful number, since it uses less digits than its factorization.

6491400030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 603 (or 559 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 6491400030 is about 80569.2250800515. The cubic root of 6491400030 is about 1865.4321514590.

Adding to 6491400030 its reverse (300041946), we get a palindrome (6791441976).

The spelling of 6491400030 in words is "six billion, four hundred ninety-one million, four hundred thousand, thirty".