1085192905 has 8 divisors (see below), whose sum is σ = 1347136200. Its totient is φ = 838217856.

The previous prime is 1085192839. The next prime is 1085192939. The reversal of 1085192905 is 5092915801.

It can be written as a sum of positive squares in 4 ways, for example, as 165405321 + 919787584 = 12861^2 + 30328^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1085192905 - 2¹¹ = 1085190857 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3741900 + ... + 3742189.

It is an arithmetic number, because the mean of its divisors is an integer number (168392025).

Almost surely, 2^1085192905 is an apocalyptic number.

It is an amenable number.

1085192905 is a deficient number, since it is larger than the sum of its proper divisors (261943295).

1085192905 is an equidigital number, since it uses as much as digits as its factorization.

1085192905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7484123.

The product of its (nonzero) digits is 32400, while the sum is 40.

The square root of 1085192905 is about 32942.2662395895. The cubic root of 1085192905 is about 1027.6273362551.

The spelling of 1085192905 in words is "one billion, eighty-five million, one hundred ninety-two thousand, nine hundred five".