1129810691 has 8 divisors (see below), whose sum is σ = 1144103184. Its totient is φ = 1115534560.

The previous prime is 1129810687. The next prime is 1129810733. The reversal of 1129810691 is 1960189211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1129810691 - 2² = 1129810687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1129810631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194765 + ... + 200481.

It is an arithmetic number, because the mean of its divisors is an integer number (143012898).

Almost surely, 2^1129810691 is an apocalyptic number.

1129810691 is a deficient number, since it is larger than the sum of its proper divisors (14292493).

1129810691 is an equidigital number, since it uses as much as digits as its factorization.

1129810691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8181.

The product of its (nonzero) digits is 7776, while the sum is 38.

The square root of 1129810691 is about 33612.6567084484. The cubic root of 1129810691 is about 1041.5222687038.

The spelling of 1129810691 in words is "one billion, one hundred twenty-nine million, eight hundred ten thousand, six hundred ninety-one".