1634530220 has 12 divisors (see below), whose sum is σ = 3432513504. Its totient is φ = 653812080.

The previous prime is 1634530193. The next prime is 1634530243. The reversal of 1634530220 is 220354361.

It is a self number, because there is not a number n which added to its sum of digits gives 1634530220.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40863236 + ... + 40863275.

It is an arithmetic number, because the mean of its divisors is an integer number (286042792).

Almost surely, 2^1634530220 is an apocalyptic number.

1634530220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1634530220 is an abundant number, since it is smaller than the sum of its proper divisors (1797983284).

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

1634530220 is a wasteful number, since it uses less digits than its factorization.

1634530220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81726520 (or 81726518 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 1634530220 is about 40429.3237638227. The cubic root of 1634530220 is about 1177.9611973809.

Adding to 1634530220 its reverse (220354361), we get a palindrome (1854884581).

The spelling of 1634530220 in words is "one billion, six hundred thirty-four million, five hundred thirty thousand, two hundred twenty".