2145134450 has 12 divisors (see below), whose sum is σ = 3989950170. Its totient is φ = 858053760.

The previous prime is 2145134423. The next prime is 2145134461. The reversal of 2145134450 is 544315412.

It can be written as a sum of positive squares in 3 ways, for example, as 782712529 + 1362421921 = 27977^2 + 36911^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21451295 + ... + 21451394.

Almost surely, 2^2145134450 is an apocalyptic number.

2145134450 is a deficient number, since it is larger than the sum of its proper divisors (1844815720).

2145134450 is a wasteful number, since it uses less digits than its factorization.

2145134450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42902701 (or 42902696 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 2145134450 is about 46315.5961853024. The cubic root of 2145134450 is about 1289.6885352644.

Adding to 2145134450 its reverse (544315412), we get a palindrome (2689449862).

The spelling of 2145134450 in words is "two billion, one hundred forty-five million, one hundred thirty-four thousand, four hundred fifty".