2578149632 has 18 divisors (see below), whose sum is σ = 5146228878. Its totient is φ = 1289074688.

The previous prime is 2578149631. The next prime is 2578149683. The reversal of 2578149632 is 2369418752.

It can be written as a sum of positive squares in only one way, i.e., 1382649856 + 1195499776 = 37184^2 + 34576^2 .

It is not an unprimeable number, because it can be changed into a prime (2578149631) by changing a digit.

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 as a sum of consecutive naturals, namely, 5035193 + ... + 5035704.

Almost surely, 2^2578149632 is an apocalyptic number.

It is an amenable number.

2578149632 is a deficient number, since it is larger than the sum of its proper divisors (2568079246).

2578149632 is an equidigital number, since it uses as much as digits as its factorization.

2578149632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10070913 (or 10070899 counting only the distinct ones).

The product of its digits is 725760, while the sum is 47.

The square root of 2578149632 is about 50775.4825875639. The cubic root of 2578149632 is about 1371.2060050197.

The spelling of 2578149632 in words is "two billion, five hundred seventy-eight million, one hundred forty-nine thousand, six hundred thirty-two".