1091146208 has 12 divisors (see below), whose sum is σ = 2148194160. Its totient is φ = 545573088.

The previous prime is 1091146201. The next prime is 1091146229. The reversal of 1091146208 is 8026411901.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 34098319 = 1091146208 / (1 + 0 + 9 + 1 + 1 + 4 + 6 + 2 + 0 + 8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1091146201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17049128 + ... + 17049191.

It is an arithmetic number, because the mean of its divisors is an integer number (179016180).

Almost surely, 2^1091146208 is an apocalyptic number.

It is an amenable number.

1091146208 is a deficient number, since it is larger than the sum of its proper divisors (1057047952).

1091146208 is an equidigital number, since it uses as much as digits as its factorization.

1091146208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34098329 (or 34098321 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 1091146208 is about 33032.5022969802. The cubic root of 1091146208 is about 1029.5030776081.

The spelling of 1091146208 in words is "one billion, ninety-one million, one hundred forty-six thousand, two hundred eight".