2143469953 has 4 divisors (see below), whose sum is σ = 2217382740. Its totient is φ = 2069557168.

The previous prime is 2143469917. The next prime is 2143469957. The reversal of 2143469953 is 3599643412.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1024768144 + 1118701809 = 32012^2 + 33447^2 .

It is a cyclic number.

It is not a de Polignac number, because 2143469953 - 2²¹ = 2141372801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2143469957) 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, 36956350 + ... + 36956407.

It is an arithmetic number, because the mean of its divisors is an integer number (554345685).

Almost surely, 2^2143469953 is an apocalyptic number.

It is an amenable number.

2143469953 is a deficient number, since it is larger than the sum of its proper divisors (73912787).

2143469953 is an equidigital number, since it uses as much as digits as its factorization.

2143469953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73912786.

The product of its digits is 699840, while the sum is 46.

The square root of 2143469953 is about 46297.6236215208. The cubic root of 2143469953 is about 1289.3548750331.

The spelling of 2143469953 in words is "two billion, one hundred forty-three million, four hundred sixty-nine thousand, nine hundred fifty-three".