1129249115 has 16 divisors (see below), whose sum is σ = 1369504800. Its totient is φ = 893824512.

The previous prime is 1129249103. The next prime is 1129249117. The reversal of 1129249115 is 5119429211.

It is a cyclic number.

It is not a de Polignac number, because 1129249115 - 2²⁰ = 1128200539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1129249117) 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, 399176 + ... + 401994.

It is an arithmetic number, because the mean of its divisors is an integer number (85594050).

Almost surely, 2^1129249115 is an apocalyptic number.

1129249115 is a deficient number, since it is larger than the sum of its proper divisors (240255685).

1129249115 is a wasteful number, since it uses less digits than its factorization.

1129249115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3646.

The product of its digits is 6480, while the sum is 35.

The square root of 1129249115 is about 33604.3020311388. The cubic root of 1129249115 is about 1041.3496761185.

The spelling of 1129249115 in words is "one billion, one hundred twenty-nine million, two hundred forty-nine thousand, one hundred fifteen".