1216441254 has 16 divisors (see below), whose sum is σ = 2780437248. Its totient is φ = 347554632.

The previous prime is 1216441253. The next prime is 1216441297. The reversal of 1216441254 is 4521446121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216441253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14481402 + ... + 14481485.

It is an arithmetic number, because the mean of its divisors is an integer number (173777328).

Almost surely, 2^1216441254 is an apocalyptic number.

1216441254 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1216441254 is an abundant number, since it is smaller than the sum of its proper divisors (1563995994).

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

1216441254 is a wasteful number, since it uses less digits than its factorization.

1216441254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28962899.

The product of its digits is 7680, while the sum is 30.

The square root of 1216441254 is about 34877.5178876020. The cubic root of 1216441254 is about 1067.4897494569.

Adding to 1216441254 its reverse (4521446121), we get a palindrome (5737887375).

The spelling of 1216441254 in words is "one billion, two hundred sixteen million, four hundred forty-one thousand, two hundred fifty-four".