1129902158 has 32 divisors (see below), whose sum is σ = 2119219200. Its totient is φ = 438939360.

The previous prime is 1129902139. The next prime is 1129902181. The reversal of 1129902158 is 8512099211.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43235 + ... + 64257.

It is an arithmetic number, because the mean of its divisors is an integer number (66225600).

Almost surely, 2^1129902158 is an apocalyptic number.

1129902158 is a deficient number, since it is larger than the sum of its proper divisors (989317042).

1129902158 is a wasteful number, since it uses less digits than its factorization.

1129902158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21392.

The product of its (nonzero) digits is 12960, while the sum is 38.

The square root of 1129902158 is about 33614.0172844604. The cubic root of 1129902158 is about 1041.5503743996.

The spelling of 1129902158 in words is "one billion, one hundred twenty-nine million, nine hundred two thousand, one hundred fifty-eight".