1129888404 has 18 divisors (see below), whose sum is σ = 2856106890. Its totient is φ = 376629456.

The previous prime is 1129888387. The next prime is 1129888423. The reversal of 1129888404 is 4048889211.

It can be written as a sum of positive squares in only one way, i.e., 1082278404 + 47610000 = 32898^2 + 6900^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 1129888404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15692859 + ... + 15692930.

It is an arithmetic number, because the mean of its divisors is an integer number (158672605).

Almost surely, 2^1129888404 is an apocalyptic number.

It is an amenable number.

1129888404 is an abundant number, since it is smaller than the sum of its proper divisors (1726218486).

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

1129888404 is a wasteful number, since it uses less digits than its factorization.

1129888404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31385799 (or 31385794 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 45.

The square root of 1129888404 is about 33613.8126965687. The cubic root of 1129888404 is about 1041.5461482101.

The spelling of 1129888404 in words is "one billion, one hundred twenty-nine million, eight hundred eighty-eight thousand, four hundred four".