1650536220 has 48 divisors (see below), whose sum is σ = 4634652960. Its totient is φ = 438890496.

The previous prime is 1650536191. The next prime is 1650536287. The reversal of 1650536220 is 226350561.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17785 + ... + 60144.

It is an arithmetic number, because the mean of its divisors is an integer number (96555270).

Almost surely, 2^1650536220 is an apocalyptic number.

1650536220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1650536220 is an abundant number, since it is smaller than the sum of its proper divisors (2984116740).

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

1650536220 is a wasteful number, since it uses less digits than its factorization.

1650536220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78294 (or 78292 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 1650536220 is about 40626.7918989427. The cubic root of 1650536220 is about 1181.7937432314.

Adding to 1650536220 its reverse (226350561), we get a palindrome (1876886781).

It can be divided in two parts, 16505 and 36220, that added together give a palindrome (52725).

The spelling of 1650536220 in words is "one billion, six hundred fifty million, five hundred thirty-six thousand, two hundred twenty".