2578494464 has 264 divisors, whose sum is σ = 6664704480. Its totient is φ = 987807744.

The previous prime is 2578494437. The next prime is 2578494473. The reversal of 2578494464 is 4644948752.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 38484959 + ... + 38485025.

Almost surely, 2^2578494464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2578494464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3332352240).

2578494464 is an abundant number, since it is smaller than the sum of its proper divisors (4086210016).

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

2578494464 is a wasteful number, since it uses less digits than its factorization.

2578494464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173 (or 148 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 53.

The square root of 2578494464 is about 50778.8781286078. The cubic root of 2578494464 is about 1371.2671360241.

The spelling of 2578494464 in words is "two billion, five hundred seventy-eight million, four hundred ninety-four thousand, four hundred sixty-four".