2148639504 has 80 divisors (see below), whose sum is σ = 6169587264. Its totient is φ = 638809600.

The previous prime is 2148639499. The next prime is 2148639511. The reversal of 2148639504 is 4059368412.

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, 10407 + ... + 66374.

Almost surely, 2^2148639504 is an apocalyptic number.

2148639504 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2148639504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3084793632).

2148639504 is an abundant number, since it is smaller than the sum of its proper divisors (4020947760).

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

2148639504 is a wasteful number, since it uses less digits than its factorization.

2148639504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76856 (or 76850 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 2148639504 is about 46353.4195502338. The cubic root of 2148639504 is about 1290.3905842094.

The spelling of 2148639504 in words is "two billion, one hundred forty-eight million, six hundred thirty-nine thousand, five hundred four".