2143745604 has 576 divisors, whose sum is σ = 7984005120. Its totient is φ = 466560000.

The previous prime is 2143745579. The next prime is 2143745621. The reversal of 2143745604 is 4065473412.

2143745604 is a `hidden beast` number, since 2 + 1 + 4 + 3 + 7 + 45 + 604 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 21225154 + ... + 21225254.

It is an arithmetic number, because the mean of its divisors is an integer number (13861120).

Almost surely, 2^2143745604 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2143745604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3992002560).

2143745604 is an abundant number, since it is smaller than the sum of its proper divisors (5840259516).

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

2143745604 is a wasteful number, since it uses less digits than its factorization.

2143745604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192 (or 187 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The square root of 2143745604 is about 46300.6004712682. The cubic root of 2143745604 is about 1289.4101431629.

It can be divided in two parts, 2143 and 745604, that added together give a palindrome (747747).

The spelling of 2143745604 in words is "two billion, one hundred forty-three million, seven hundred forty-five thousand, six hundred four".