2148669556 has 24 divisors (see below), whose sum is σ = 4142628000. Its totient is φ = 966996000.

The previous prime is 2148669547. The next prime is 2148669569. The reversal of 2148669556 is 6559668412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237306 + ... + 246193.

It is an arithmetic number, because the mean of its divisors is an integer number (172609500).

Almost surely, 2^2148669556 is an apocalyptic number.

It is an amenable number.

2148669556 is a deficient number, since it is larger than the sum of its proper divisors (1993958444).

2148669556 is a wasteful number, since it uses less digits than its factorization.

2148669556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483615 (or 483613 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 52.

The square root of 2148669556 is about 46353.7437107296. The cubic root of 2148669556 is about 1290.3966002080.

It can be divided in two parts, 214866 and 9556, that added together give a palindrome (224422).

The spelling of 2148669556 in words is "two billion, one hundred forty-eight million, six hundred sixty-nine thousand, five hundred fifty-six".