18851085 has 24 divisors (see below), whose sum is σ = 35646624. Its totient is φ = 9139680.

The previous prime is 18851083. The next prime is 18851087. The reversal of 18851085 is 58015881.

It is an interprime number because it is at equal distance from previous prime (18851083) and next prime (18851087).

It is not a de Polignac number, because 18851085 - 2¹ = 18851083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18851083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18547 + ... + 19536.

It is an arithmetic number, because the mean of its divisors is an integer number (1485276).

Almost surely, 2^18851085 is an apocalyptic number.

18851085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18851085 is a deficient number, since it is larger than the sum of its proper divisors (16795539).

18851085 is a wasteful number, since it uses less digits than its factorization.

18851085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38105 (or 38102 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 36.

The square root of 18851085 is about 4341.7836196660. The cubic root of 18851085 is about 266.1412039790.

The spelling of 18851085 in words is "eighteen million, eight hundred fifty-one thousand, eighty-five".