18002413 has 24 divisors (see below), whose sum is σ = 22020768. Its totient is φ = 14508000.

The previous prime is 18002401. The next prime is 18002419. The reversal of 18002413 is 31420081.

It is not a de Polignac number, because 18002413 - 2⁹ = 18001901 is a prime.

It is a Smith number, since the sum of its digits (19) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18002419) 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, 137358 + ... + 137488.

It is an arithmetic number, because the mean of its divisors is an integer number (917532).

Almost surely, 2^18002413 is an apocalyptic number.

18002413 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

18002413 is a deficient number, since it is larger than the sum of its proper divisors (4018355).

18002413 is a wasteful number, since it uses less digits than its factorization.

18002413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 186 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 18002413 is about 4242.9250523666. The cubic root of 18002413 is about 262.0858497291.

Adding to 18002413 its reverse (31420081), we get a palindrome (49422494).

The spelling of 18002413 in words is "eighteen million, two thousand, four hundred thirteen".