2148387884644 has 27 divisors (see below), whose sum is σ = 3781499199051. Its totient is φ = 1067995336320.

The previous prime is 2148387884611. The next prime is 2148387884653. The reversal of 2148387884644 is 4464887838412.

The square root of 2148387884644 is 1465738.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 1418866910244 + 729520974400 = 1191162^2 + 854120^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2148387884644.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 530595132 + ... + 530599180.

Almost surely, 2^{2148387884644} is an apocalyptic number.

2148387884644 is the 1465738-th square number.

It is an amenable number.

2148387884644 is a deficient number, since it is larger than the sum of its proper divisors (1633111314407).

2148387884644 is an frugal number, since it uses more digits than its factorization.

2148387884644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8464 (or 4232 counting only the distinct ones).

The product of its digits is 264241152, while the sum is 67.

The spelling of 2148387884644 in words is "two trillion, one hundred forty-eight billion, three hundred eighty-seven million, eight hundred eighty-four thousand, six hundred forty-four".