2488921864 has 64 divisors (see below), whose sum is σ = 5534101440. Its totient is φ = 1034492160.

The previous prime is 2488921823. The next prime is 2488921879. The reversal of 2488921864 is 4681298842.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112242 + ... + 132574.

It is an arithmetic number, because the mean of its divisors is an integer number (86470335).

Almost surely, 2^2488921864 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 2488921864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2767050720).

2488921864 is an abundant number, since it is smaller than the sum of its proper divisors (3045179576).

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

2488921864 is a wasteful number, since it uses less digits than its factorization.

2488921864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20470 (or 20466 counting only the distinct ones).

The product of its digits is 1769472, while the sum is 52.

The square root of 2488921864 is about 49889.0956422343. The cubic root of 2488921864 is about 1355.2011273546.

The spelling of 2488921864 in words is "two billion, four hundred eighty-eight million, nine hundred twenty-one thousand, eight hundred sixty-four".