1213501450 has 48 divisors (see below), whose sum is σ = 2582406144. Its totient is φ = 415598400.

The previous prime is 1213501427. The next prime is 1213501451. The reversal of 1213501450 is 541053121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1213501451) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 513672 + ... + 516028.

It is an arithmetic number, because the mean of its divisors is an integer number (53800128).

Almost surely, 2^1213501450 is an apocalyptic number.

1213501450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213501450 is an abundant number, since it is smaller than the sum of its proper divisors (1368904694).

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

1213501450 is a wasteful number, since it uses less digits than its factorization.

1213501450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3847 (or 3842 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1213501450 is about 34835.3477089005. The cubic root of 1213501450 is about 1066.6291127187.

Adding to 1213501450 its reverse (541053121), we get a palindrome (1754554571).

The spelling of 1213501450 in words is "one billion, two hundred thirteen million, five hundred one thousand, four hundred fifty".