1129089438 has 24 divisors (see below), whose sum is σ = 2452538088. Its totient is φ = 375412752.

The previous prime is 1129089419. The next prime is 1129089463. The reversal of 1129089438 is 8349809211.

It is a junction number, because it is equal to n+sod(n) for n = 1129089393 and 1129089402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71856 + ... + 86147.

It is an arithmetic number, because the mean of its divisors is an integer number (102189087).

Almost surely, 2^1129089438 is an apocalyptic number.

1129089438 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1129089438 is an abundant number, since it is smaller than the sum of its proper divisors (1323448650).

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

1129089438 is a wasteful number, since it uses less digits than its factorization.

1129089438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158408 (or 158405 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 1129089438 is about 33601.9261055077. The cubic root of 1129089438 is about 1041.3005911623.

The spelling of 1129089438 in words is "one billion, one hundred twenty-nine million, eighty-nine thousand, four hundred thirty-eight".