1141216605 has 12 divisors (see below), whose sum is σ = 1978108860. Its totient is φ = 608648832.

The previous prime is 1141216577. The next prime is 1141216607. The reversal of 1141216605 is 5066121411.

1141216605 is a `hidden beast` number, since 1 + 1 + 41 + 2 + 16 + 605 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 438860601 + 702356004 = 20949^2 + 26502^2 .

It is not a de Polignac number, because 1141216605 - 2¹² = 1141212509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1141216607) 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, 12680140 + ... + 12680229.

It is an arithmetic number, because the mean of its divisors is an integer number (164842405).

Almost surely, 2^1141216605 is an apocalyptic number.

1141216605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1141216605 is a deficient number, since it is larger than the sum of its proper divisors (836892255).

1141216605 is a wasteful number, since it uses less digits than its factorization.

1141216605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25360380 (or 25360377 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1141216605 is about 33781.8975932377. The cubic root of 1141216605 is about 1045.0154084554.

The spelling of 1141216605 in words is "one billion, one hundred forty-one million, two hundred sixteen thousand, six hundred five".