2548477890 has 160 divisors (see below), whose sum is σ = 7865890560. Its totient is φ = 579954816.

The previous prime is 2548477889. The next prime is 2548477907. The reversal of 2548477890 is 987748452.

It is a happy number.

2548477890 is a `hidden beast` number, since 2 + 5 + 484 + 7 + 78 + 90 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1490356 + ... + 1492064.

It is an arithmetic number, because the mean of its divisors is an integer number (49161816).

Almost surely, 2^2548477890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2548477890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3932945280).

2548477890 is an abundant number, since it is smaller than the sum of its proper divisors (5317412670).

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

2548477890 is a wasteful number, since it uses less digits than its factorization.

2548477890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1998 (or 1989 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 54.

The square root of 2548477890 is about 50482.4513073603. The cubic root of 2548477890 is about 1365.9253235603.

The spelling of 2548477890 in words is "two billion, five hundred forty-eight million, four hundred seventy-seven thousand, eight hundred ninety".