1216734741 has 12 divisors (see below), whose sum is σ = 1758015168. Its totient is φ = 810921384.

The previous prime is 1216734733. The next prime is 1216734821. The reversal of 1216734741 is 1474376121.

1216734741 is a `hidden beast` number, since 121 + 67 + 3 + 474 + 1 = 666.

It is not a de Polignac number, because 1216734741 - 2³ = 1216734733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1216734696 and 1216734705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216734721) 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 11 ways as a sum of consecutive naturals, for example, 16726 + ... + 52088.

It is an arithmetic number, because the mean of its divisors is an integer number (146501264).

Almost surely, 2^1216734741 is an apocalyptic number.

It is an amenable number.

1216734741 is a deficient number, since it is larger than the sum of its proper divisors (541280427).

1216734741 is a wasteful number, since it uses less digits than its factorization.

1216734741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39192 (or 39189 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 1216734741 is about 34881.7250290177. The cubic root of 1216734741 is about 1067.5755925314.

The spelling of 1216734741 in words is "one billion, two hundred sixteen million, seven hundred thirty-four thousand, seven hundred forty-one".