2143545412 has 6 divisors (see below), whose sum is σ = 3751204478. Its totient is φ = 1071772704.

The previous prime is 2143545407. The next prime is 2143545427. The reversal of 2143545412 is 2145453412.

It can be written as a sum of positive squares in only one way, i.e., 1878702336 + 264843076 = 43344^2 + 16274^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 267943173 + ... + 267943180.

Almost surely, 2^2143545412 is an apocalyptic number.

It is an amenable number.

2143545412 is a deficient number, since it is larger than the sum of its proper divisors (1607659066).

2143545412 is a wasteful number, since it uses less digits than its factorization.

2143545412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535886357 (or 535886355 counting only the distinct ones).

The product of its digits is 19200, while the sum is 31.

The square root of 2143545412 is about 46298.4385481843. The cubic root of 2143545412 is about 1289.3700050621.

Adding to 2143545412 its reverse (2145453412), we get a palindrome (4288998824).

The spelling of 2143545412 in words is "two billion, one hundred forty-three million, five hundred forty-five thousand, four hundred twelve".