8180985 has 24 divisors (see below), whose sum is σ = 13696704. Its totient is φ = 4169440.

The previous prime is 8180957. The next prime is 8180989. The reversal of 8180985 is 5890818.

It is not a de Polignac number, because 8180985 - 2⁷ = 8180857 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8180989) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7420 + ... + 8450.

It is an arithmetic number, because the mean of its divisors is an integer number (570696).

Almost surely, 2^8180985 is an apocalyptic number.

It is an amenable number.

8180985 is a deficient number, since it is larger than the sum of its proper divisors (5515719).

8180985 is a wasteful number, since it uses less digits than its factorization.

8180985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085 (or 1062 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 39.

The square root of 8180985 is about 2860.2421226183. The cubic root of 8180985 is about 201.4969756969.

The spelling of 8180985 in words is "eight million, one hundred eighty thousand, nine hundred eighty-five".