2148498021 has 4 divisors (see below), whose sum is σ = 2864664032. Its totient is φ = 1432332012.

The previous prime is 2148498013. The next prime is 2148498061. The reversal of 2148498021 is 1208948412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2148498021 - 2³ = 2148498013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2148498061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 358083001 + ... + 358083006.

It is an arithmetic number, because the mean of its divisors is an integer number (716166008).

Almost surely, 2^2148498021 is an apocalyptic number.

It is an amenable number.

2148498021 is a deficient number, since it is larger than the sum of its proper divisors (716166011).

2148498021 is an equidigital number, since it uses as much as digits as its factorization.

2148498021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716166010.

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 2148498021 is about 46351.8933917483. The cubic root of 2148498021 is about 1290.3622604976.

The spelling of 2148498021 in words is "two billion, one hundred forty-eight million, four hundred ninety-eight thousand, twenty-one".