1009000185 has 16 divisors (see below), whose sum is σ = 1618263360. Its totient is φ = 536845760.

The previous prime is 1009000177. The next prime is 1009000189. The reversal of 1009000185 is 5810009001.

It is not a de Polignac number, because 1009000185 - 2³ = 1009000177 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1009000189) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73986 + ... + 86555.

It is an arithmetic number, because the mean of its divisors is an integer number (101141460).

Almost surely, 2^1009000185 is an apocalyptic number.

1009000185 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1009000185 is a deficient number, since it is larger than the sum of its proper divisors (609263175).

1009000185 is a wasteful number, since it uses less digits than its factorization.

1009000185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160968.

The product of its (nonzero) digits is 360, while the sum is 24.

The square root of 1009000185 is about 31764.7632605691. The cubic root of 1009000185 is about 1002.9911060312.

Adding to 1009000185 its reverse (5810009001), we get a palindrome (6819009186).

The spelling of 1009000185 in words is "one billion, nine million, one hundred eighty-five", and thus it is an aban number.