1129216373 has 4 divisors (see below), whose sum is σ = 1132452300. Its totient is φ = 1125980448.

The previous prime is 1129216351. The next prime is 1129216391. The reversal of 1129216373 is 3736129211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 405498769 + 723717604 = 20137^2 + 26902^2 .

It is a cyclic number.

It is not a de Polignac number, because 1129216373 - 2⁸ = 1129216117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1129216343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1617440 + ... + 1618137.

It is an arithmetic number, because the mean of its divisors is an integer number (283113075).

Almost surely, 2^1129216373 is an apocalyptic number.

It is an amenable number.

1129216373 is a deficient number, since it is larger than the sum of its proper divisors (3235927).

1129216373 is an equidigital number, since it uses as much as digits as its factorization.

1129216373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3235926.

The product of its digits is 13608, while the sum is 35.

The square root of 1129216373 is about 33603.8148578402. The cubic root of 1129216373 is about 1041.3396115543.

The spelling of 1129216373 in words is "one billion, one hundred twenty-nine million, two hundred sixteen thousand, three hundred seventy-three".