2143454415 has 16 divisors (see below), whose sum is σ = 3430101600. Its totient is φ = 1142984192.

The previous prime is 2143454407. The next prime is 2143454431. The reversal of 2143454415 is 5144543412.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2143454415 - 2³ = 2143454407 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164251 + ... + 176819.

It is an arithmetic number, because the mean of its divisors is an integer number (214381350).

Almost surely, 2^2143454415 is an apocalyptic number.

2143454415 is a deficient number, since it is larger than the sum of its proper divisors (1286647185).

2143454415 is a wasteful number, since it uses less digits than its factorization.

2143454415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23946.

The product of its digits is 38400, while the sum is 33.

The square root of 2143454415 is about 46297.4558156277. The cubic root of 2143454415 is about 1289.3517595172.

Adding to 2143454415 its reverse (5144543412), we get a palindrome (7287997827).

The spelling of 2143454415 in words is "two billion, one hundred forty-three million, four hundred fifty-four thousand, four hundred fifteen".