2148458820 has 96 divisors (see below), whose sum is σ = 6397910400. Its totient is φ = 537145344.

The previous prime is 2148458803. The next prime is 2148458833. The reversal of 2148458820 is 288548412.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 100866 + ... + 120294.

It is an arithmetic number, because the mean of its divisors is an integer number (66644900).

Almost surely, 2^2148458820 is an apocalyptic number.

2148458820 is a gapful number since it is divisible by the number (20) 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 2148458820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3198955200).

2148458820 is an abundant number, since it is smaller than the sum of its proper divisors (4249451580).

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

2148458820 is a wasteful number, since it uses less digits than its factorization.

2148458820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19557 (or 19555 counting only the distinct ones).

The product of its (nonzero) digits is 163840, while the sum is 42.

The square root of 2148458820 is about 46351.4705268344. The cubic root of 2148458820 is about 1290.3544125656.

The spelling of 2148458820 in words is "two billion, one hundred forty-eight million, four hundred fifty-eight thousand, eight hundred twenty".