1129161612 has 12 divisors (see below), whose sum is σ = 2634710456. Its totient is φ = 376387200.

The previous prime is 1129161599. The next prime is 1129161613. The reversal of 1129161612 is 2161619211.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 1129161612.

It is not an unprimeable number, because it can be changed into a prime (1129161613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47048389 + ... + 47048412.

Almost surely, 2^1129161612 is an apocalyptic number.

1129161612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1129161612 is an abundant number, since it is smaller than the sum of its proper divisors (1505548844).

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

1129161612 is a wasteful number, since it uses less digits than its factorization.

1129161612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94096808 (or 94096806 counting only the distinct ones).

The product of its digits is 1296, while the sum is 30.

The square root of 1129161612 is about 33603.0000446389. Note that the first 4 decimals coincide. The cubic root of 1129161612 is about 1041.3227781344.

The spelling of 1129161612 in words is "one billion, one hundred twenty-nine million, one hundred sixty-one thousand, six hundred twelve".