2478821764 has 12 divisors (see below), whose sum is σ = 4350024000. Its totient is φ = 1235957768.

The previous prime is 2478821753. The next prime is 2478821831. The reversal of 2478821764 is 4671288742.

It is a super-2 number, since 2×2478821764² = 12289114675360143392, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 861664 + ... + 864535.

It is an arithmetic number, because the mean of its divisors is an integer number (362502000).

Almost surely, 2^2478821764 is an apocalyptic number.

It is an amenable number.

2478821764 is a deficient number, since it is larger than the sum of its proper divisors (1871202236).

2478821764 is a wasteful number, since it uses less digits than its factorization.

2478821764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1726562 (or 1726560 counting only the distinct ones).

The product of its digits is 1204224, while the sum is 49.

The square root of 2478821764 is about 49787.7672124388. The cubic root of 2478821764 is about 1353.3654967132.

The spelling of 2478821764 in words is "two billion, four hundred seventy-eight million, eight hundred twenty-one thousand, seven hundred sixty-four".