2143455824 has 20 divisors (see below), whose sum is σ = 4162823220. Its totient is φ = 1069178880.

The previous prime is 2143455823. The next prime is 2143455833. The reversal of 2143455824 is 4285543412.

It can be written as a sum of positive squares in 2 ways, for example, as 43983424 + 2099472400 = 6632^2 + 45820^2 .

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2143455823) 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, 152369 + ... + 165840.

It is an arithmetic number, because the mean of its divisors is an integer number (208141161).

Almost surely, 2^2143455824 is an apocalyptic number.

It is an amenable number.

2143455824 is a deficient number, since it is larger than the sum of its proper divisors (2019367396).

2143455824 is a wasteful number, since it uses less digits than its factorization.

2143455824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318638 (or 318632 counting only the distinct ones).

The product of its digits is 153600, while the sum is 38.

The square root of 2143455824 is about 46297.4710324441. The cubic root of 2143455824 is about 1289.3520420356.

The spelling of 2143455824 in words is "two billion, one hundred forty-three million, four hundred fifty-five thousand, eight hundred twenty-four".