1216502150 has 72 divisors (see below), whose sum is σ = 2487363120. Its totient is φ = 442032640.

The previous prime is 1216502129. The next prime is 1216502159. The reversal of 1216502150 is 512056121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216502159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 417599 + ... + 420501.

It is an arithmetic number, because the mean of its divisors is an integer number (34546710).

Almost surely, 2^1216502150 is an apocalyptic number.

1216502150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1216502150 is an abundant number, since it is smaller than the sum of its proper divisors (1270860970).

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

1216502150 is a wasteful number, since it uses less digits than its factorization.

1216502150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2978 (or 2956 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 1216502150 is about 34878.3908745802. The cubic root of 1216502150 is about 1067.5075622834.

Adding to 1216502150 its reverse (512056121), we get a palindrome (1728558271).

The spelling of 1216502150 in words is "one billion, two hundred sixteen million, five hundred two thousand, one hundred fifty".