1129549164 has 48 divisors (see below), whose sum is σ = 2781542400. Its totient is φ = 355772736.

The previous prime is 1129549163. The next prime is 1129549177. The reversal of 1129549164 is 4619459211.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1129549163) 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, 84277 + ... + 96755.

It is an arithmetic number, because the mean of its divisors is an integer number (57948800).

Almost surely, 2^1129549164 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1129549164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1390771200).

1129549164 is an abundant number, since it is smaller than the sum of its proper divisors (1651993236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1129549164 is a wasteful number, since it uses less digits than its factorization.

1129549164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12902 (or 12900 counting only the distinct ones).

The product of its digits is 77760, while the sum is 42.

The square root of 1129549164 is about 33608.7661778888. The cubic root of 1129549164 is about 1041.4418991291.

The spelling of 1129549164 in words is "one billion, one hundred twenty-nine million, five hundred forty-nine thousand, one hundred sixty-four".