1131658136 has 72 divisors (see below), whose sum is σ = 2501774460. Its totient is φ = 478497600.

The previous prime is 1131658127. The next prime is 1131658141. The reversal of 1131658136 is 6318561311.

It is a junction number, because it is equal to n+sod(n) for n = 1131658096 and 1131658105.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3998651 + ... + 3998933.

Almost surely, 2^1131658136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1131658136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1250887230).

1131658136 is an abundant number, since it is smaller than the sum of its proper divisors (1370116324).

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

1131658136 is a wasteful number, since it uses less digits than its factorization.

1131658136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505 (or 393 counting only the distinct ones).

The product of its digits is 12960, while the sum is 35.

The square root of 1131658136 is about 33640.1268725313. The cubic root of 1131658136 is about 1042.0896520404.

The spelling of 1131658136 in words is "one billion, one hundred thirty-one million, six hundred fifty-eight thousand, one hundred thirty-six".