2478418920 has 48 divisors (see below), whose sum is σ = 8054862660. Its totient is φ = 660911616.

The previous prime is 2478418883. The next prime is 2478418931. The reversal of 2478418920 is 298148742.

It can be written as a sum of positive squares in 2 ways, for example, as 2478247524 + 171396 = 49782^2 + 414^2 .

It is a super-2 number, since 2×2478418920² = 12285120686027932800, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3441889 + ... + 3442608.

Almost surely, 2^2478418920 is an apocalyptic number.

2478418920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2478418920 is an abundant number, since it is smaller than the sum of its proper divisors (5576443740).

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

2478418920 is a wasteful number, since it uses less digits than its factorization.

2478418920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6884514 (or 6884507 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The square root of 2478418920 is about 49783.7214358268. The cubic root of 2478418920 is about 1353.2921789896.

The spelling of 2478418920 in words is "two billion, four hundred seventy-eight million, four hundred eighteen thousand, nine hundred twenty".