10985161 has 4 divisors (see below), whose sum is σ = 11983824. Its totient is φ = 9986500.

The previous prime is 10985147. The next prime is 10985197. The reversal of 10985161 is 16158901.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10985161 - 2¹¹ = 10983113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10985101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 499315 + ... + 499336.

It is an arithmetic number, because the mean of its divisors is an integer number (2995956).

Almost surely, 2^10985161 is an apocalyptic number.

10985161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10985161 is a deficient number, since it is larger than the sum of its proper divisors (998663).

10985161 is an equidigital number, since it uses as much as digits as its factorization.

10985161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998662.

The product of its (nonzero) digits is 2160, while the sum is 31.

The square root of 10985161 is about 3314.3869719754. The cubic root of 10985161 is about 222.2979590829.

The spelling of 10985161 in words is "ten million, nine hundred eighty-five thousand, one hundred sixty-one".