18761085 has 32 divisors (see below), whose sum is σ = 38119680. Its totient is φ = 8576064.

The previous prime is 18761069. The next prime is 18761087. The reversal of 18761085 is 58016781.

It is not a de Polignac number, because 18761085 - 2⁴ = 18761069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18761087) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8982 + ... + 10871.

It is an arithmetic number, because the mean of its divisors is an integer number (1191240).

Almost surely, 2^18761085 is an apocalyptic number.

18761085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18761085 is an abundant number, since it is smaller than the sum of its proper divisors (19358595).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18761085 is a wasteful number, since it uses less digits than its factorization.

18761085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19874 (or 19868 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 36.

The square root of 18761085 is about 4331.4068153430. The cubic root of 18761085 is about 265.7169856274.

The spelling of 18761085 in words is "eighteen million, seven hundred sixty-one thousand, eighty-five".