18314505 has 40 divisors (see below), whose sum is σ = 35823744. Its totient is φ = 8877600.

The previous prime is 18314503. The next prime is 18314539. The reversal of 18314505 is 50541381.

It is not a de Polignac number, because 18314505 - 2¹ = 18314503 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (18314503) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2400 + ... + 6510.

Almost surely, 2^18314505 is an apocalyptic number.

18314505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18314505 is a deficient number, since it is larger than the sum of its proper divisors (17509239).

18314505 is a wasteful number, since it uses less digits than its factorization.

18314505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4139 (or 4130 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 18314505 is about 4279.5449524453. The cubic root of 18314505 is about 263.5916983930.

Adding to 18314505 its reverse (50541381), we get a palindrome (68855886).

It can be divided in two parts, 1831 and 4505, that added together give a palindrome (6336).

The spelling of 18314505 in words is "eighteen million, three hundred fourteen thousand, five hundred five".