2143454145 has 64 divisors (see below), whose sum is σ = 3991597056. Its totient is φ = 961954560.

The previous prime is 2143454107. The next prime is 2143454207. The reversal of 2143454145 is 5414543412.

It is a happy number.

It is not a de Polignac number, because 2143454145 - 2⁸ = 2143453889 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2362782 + ... + 2363688.

It is an arithmetic number, because the mean of its divisors is an integer number (62368704).

Almost surely, 2^2143454145 is an apocalyptic number.

It is an amenable number.

2143454145 is a deficient number, since it is larger than the sum of its proper divisors (1848142911).

2143454145 is a wasteful number, since it uses less digits than its factorization.

2143454145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1310.

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

The square root of 2143454145 is about 46297.4528997006. The cubic root of 2143454145 is about 1289.3517053795.

Adding to 2143454145 its reverse (5414543412), we get a palindrome (7557997557).

The spelling of 2143454145 in words is "two billion, one hundred forty-three million, four hundred fifty-four thousand, one hundred forty-five".