2145434450 has 12 divisors (see below), whose sum is σ = 3990508170. Its totient is φ = 858173760.

The previous prime is 2145434441. The next prime is 2145434479. The reversal of 2145434450 is 544345412.

It can be written as a sum of positive squares in 3 ways, for example, as 1437395569 + 708038881 = 37913^2 + 26609^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21454295 + ... + 21454394.

Almost surely, 2^2145434450 is an apocalyptic number.

2145434450 is a deficient number, since it is larger than the sum of its proper divisors (1845073720).

2145434450 is a wasteful number, since it uses less digits than its factorization.

2145434450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42908701 (or 42908696 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 32.

The square root of 2145434450 is about 46318.8347219573. The cubic root of 2145434450 is about 1289.7486540331.

Adding to 2145434450 its reverse (544345412), we get a palindrome (2689779862).

The spelling of 2145434450 in words is "two billion, one hundred forty-five million, four hundred thirty-four thousand, four hundred fifty".