1129961833 has 32 divisors (see below), whose sum is σ = 1558206720. Its totient is φ = 790767360.

The previous prime is 1129961821. The next prime is 1129961839. The reversal of 1129961833 is 3381699211.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1129961833 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1129961833.

It is not an unprimeable number, because it can be changed into a prime (1129961839) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21783 + ... + 52291.

It is an arithmetic number, because the mean of its divisors is an integer number (48693960).

Almost surely, 2^1129961833 is an apocalyptic number.

1129961833 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1129961833 is a deficient number, since it is larger than the sum of its proper divisors (428244887).

1129961833 is a wasteful number, since it uses less digits than its factorization.

1129961833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30577.

The product of its digits is 69984, while the sum is 43.

The square root of 1129961833 is about 33614.9049232628. The cubic root of 1129961833 is about 1041.5687103307.

The spelling of 1129961833 in words is "one billion, one hundred twenty-nine million, nine hundred sixty-one thousand, eight hundred thirty-three".