1220253650 has 96 divisors (see below), whose sum is σ = 2849817600. Its totient is φ = 377640000.

The previous prime is 1220253649. The next prime is 1220253667. The reversal of 1220253650 is 563520221.

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 47 ways as a sum of consecutive naturals, for example, 580301 + ... + 582399.

It is an arithmetic number, because the mean of its divisors is an integer number (29685600).

Almost surely, 2^1220253650 is an apocalyptic number.

1220253650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220253650 is an abundant number, since it is smaller than the sum of its proper divisors (1629563950).

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

1220253650 is a wasteful number, since it uses less digits than its factorization.

1220253650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2280 (or 2275 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 1220253650 is about 34932.1291936235. The cubic root of 1220253650 is about 1068.6037776311.

Adding to 1220253650 its reverse (563520221), we get a palindrome (1783773871).

The spelling of 1220253650 in words is "one billion, two hundred twenty million, two hundred fifty-three thousand, six hundred fifty".