1085900208 has 40 divisors (see below), whose sum is σ = 2807455728. Its totient is φ = 361681152.

The previous prime is 1085900203. The next prime is 1085900227. The reversal of 1085900208 is 8020095801.

It is a happy number.

It is a Cunningham number, because it is equal to 32953²-1.

It is not an unprimeable number, because it can be changed into a prime (1085900201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57666 + ... + 74142.

Almost surely, 2^1085900208 is an apocalyptic number.

It is an amenable number.

1085900208 is an abundant number, since it is smaller than the sum of its proper divisors (1721555520).

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

1085900208 is a wasteful number, since it uses less digits than its factorization.

1085900208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17861 (or 17855 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 1085900208 is about 32952.9999848269. Note that the first 4 decimals coincide. The cubic root of 1085900208 is about 1027.8505488098.

The spelling of 1085900208 in words is "one billion, eighty-five million, nine hundred thousand, two hundred eight".