18836485 has 4 divisors (see below), whose sum is σ = 22603788. Its totient is φ = 15069184.

The previous prime is 18836483. The next prime is 18836491. The reversal of 18836485 is 58463881.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58463881 = 7 ⋅8351983.

It can be written as a sum of positive squares in 2 ways, for example, as 9108324 + 9728161 = 3018^2 + 3119^2 .

It is a cyclic number.

It is not a de Polignac number, because 18836485 - 2¹ = 18836483 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18836483) 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, 1883644 + ... + 1883653.

It is an arithmetic number, because the mean of its divisors is an integer number (5650947).

Almost surely, 2^18836485 is an apocalyptic number.

It is an amenable number.

18836485 is a deficient number, since it is larger than the sum of its proper divisors (3767303).

18836485 is an equidigital number, since it uses as much as digits as its factorization.

18836485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3767302.

The product of its digits is 184320, while the sum is 43.

The square root of 18836485 is about 4340.1019573277. The cubic root of 18836485 is about 266.0724782240.

It can be divided in two parts, 18836 and 485, that added together give a square (19321 = 139²).

The spelling of 18836485 in words is "eighteen million, eight hundred thirty-six thousand, four hundred eighty-five".