1129215186 has 48 divisors (see below), whose sum is σ = 2708922528. Its totient is φ = 337075200.

The previous prime is 1129215167. The next prime is 1129215193. The reversal of 1129215186 is 6815129211.

1129215186 is a `hidden beast` number, since 112 + 9 + 21 + 518 + 6 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1129215186.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29295 + ... + 55826.

It is an arithmetic number, because the mean of its divisors is an integer number (56435886).

Almost surely, 2^1129215186 is an apocalyptic number.

1129215186 is an abundant number, since it is smaller than the sum of its proper divisors (1579707342).

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

1129215186 is a wasteful number, since it uses less digits than its factorization.

1129215186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85207 (or 85204 counting only the distinct ones).

The product of its digits is 8640, while the sum is 36.

The square root of 1129215186 is about 33603.7971961503. The cubic root of 1129215186 is about 1041.3392466787.

Subtracting 1129215186 from its reverse (6815129211), we obtain a square (5685914025 = 75405²).

The spelling of 1129215186 in words is "one billion, one hundred twenty-nine million, two hundred fifteen thousand, one hundred eighty-six".