501644130 has 32 divisors (see below), whose sum is σ = 1296558144. Its totient is φ = 123481536.

The previous prime is 501644123. The next prime is 501644131. The reversal of 501644130 is 31446105.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 501644130.

It is not an unprimeable number, because it can be changed into a prime (501644131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 642744 + ... + 643523.

It is an arithmetic number, because the mean of its divisors is an integer number (40517442).

Almost surely, 2^501644130 is an apocalyptic number.

501644130 is an abundant number, since it is smaller than the sum of its proper divisors (794914014).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

501644130 is a wasteful number, since it uses less digits than its factorization.

501644130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286290.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 501644130 is about 22397.4134667376. The cubic root of 501644130 is about 794.5695387296.

The spelling of 501644130 in words is "five hundred one million, six hundred forty-four thousand, one hundred thirty".