645141452 has 12 divisors (see below), whose sum is σ = 1130861760. Its totient is φ = 322038096.

The previous prime is 645141451. The next prime is 645141463. The reversal of 645141452 is 254141546.

It is not an unprimeable number, because it can be changed into a prime (645141451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130427 + ... + 135282.

It is an arithmetic number, because the mean of its divisors is an integer number (94238480).

Almost surely, 2^645141452 is an apocalyptic number.

It is an amenable number.

645141452 is a deficient number, since it is larger than the sum of its proper divisors (485720308).

645141452 is a wasteful number, since it uses less digits than its factorization.

645141452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266320 (or 266318 counting only the distinct ones).

The product of its digits is 19200, while the sum is 32.

The square root of 645141452 is about 25399.6348792655. The cubic root of 645141452 is about 864.0754160136.

Adding to 645141452 its reverse (254141546), we get a palindrome (899282998).

The spelling of 645141452 in words is "six hundred forty-five million, one hundred forty-one thousand, four hundred fifty-two".