18101085 has 16 divisors (see below), whose sum is σ = 29230080. Its totient is φ = 9564480.

The previous prime is 18101081. The next prime is 18101089. The reversal of 18101085 is 58010181.

It is an interprime number because it is at equal distance from previous prime (18101081) and next prime (18101089).

It is not a de Polignac number, because 18101085 - 2² = 18101081 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18101081) 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, 3901 + ... + 7170.

It is an arithmetic number, because the mean of its divisors is an integer number (1826880).

Almost surely, 2^18101085 is an apocalyptic number.

18101085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18101085 is a deficient number, since it is larger than the sum of its proper divisors (11128995).

18101085 is a wasteful number, since it uses less digits than its factorization.

18101085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11188.

The product of its (nonzero) digits is 320, while the sum is 24.

The square root of 18101085 is about 4254.5369900848. The cubic root of 18101085 is about 262.5638121508.

The spelling of 18101085 in words is "eighteen million, one hundred one thousand, eighty-five".