2494646640 has 320 divisors, whose sum is σ = 9325653120. Its totient is φ = 610467840.

The previous prime is 2494646611. The next prime is 2494646659. The reversal of 2494646640 is 466464942.

2494646640 is a `hidden beast` number, since 2 + 494 + 64 + 66 + 40 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1504692 + ... + 1506348.

It is an arithmetic number, because the mean of its divisors is an integer number (29142666).

Almost surely, 2^2494646640 is an apocalyptic number.

2494646640 is a gapful number since it is divisible by the number (20) 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 2494646640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4662826560).

2494646640 is an abundant number, since it is smaller than the sum of its proper divisors (6831006480).

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

2494646640 is a wasteful number, since it uses less digits than its factorization.

2494646640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1737 (or 1725 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 45.

The square root of 2494646640 is about 49946.4377108118. The cubic root of 2494646640 is about 1356.2393656850.

The spelling of 2494646640 in words is "two billion, four hundred ninety-four million, six hundred forty-six thousand, six hundred forty".