18350518 has 8 divisors (see below), whose sum is σ = 27913680. Its totient is φ = 9045960.

The previous prime is 18350513. The next prime is 18350567. The reversal of 18350518 is 81505381.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 18350518.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18350513) 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, 64473 + ... + 64756.

It is an arithmetic number, because the mean of its divisors is an integer number (3489210).

Almost surely, 2^18350518 is an apocalyptic number.

18350518 is a deficient number, since it is larger than the sum of its proper divisors (9563162).

18350518 is a wasteful number, since it uses less digits than its factorization.

18350518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129302.

The product of its (nonzero) digits is 4800, while the sum is 31.

The square root of 18350518 is about 4283.7504595856. The cubic root of 18350518 is about 263.7643577608.

Adding to 18350518 its reverse (81505381), we get a palindrome (99855899).

The spelling of 18350518 in words is "eighteen million, three hundred fifty thousand, five hundred eighteen".