1129030191 has 16 divisors (see below), whose sum is σ = 1695553120. Its totient is φ = 742374720.

The previous prime is 1129030183. The next prime is 1129030207. The reversal of 1129030191 is 1910309211.

It is not a de Polignac number, because 1129030191 - 2³ = 1129030183 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1129035191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 284440 + ... + 288381.

It is an arithmetic number, because the mean of its divisors is an integer number (105972070).

Almost surely, 2^1129030191 is an apocalyptic number.

1129030191 is a deficient number, since it is larger than the sum of its proper divisors (566522929).

1129030191 is an equidigital number, since it uses as much as digits as its factorization.

1129030191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572903 (or 572897 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 27.

The square root of 1129030191 is about 33601.0444926940. The cubic root of 1129030191 is about 1041.2823773659.

The spelling of 1129030191 in words is "one billion, one hundred twenty-nine million, thirty thousand, one hundred ninety-one".