18348863 has 8 divisors (see below), whose sum is σ = 19983600. Its totient is φ = 16746048.

The previous prime is 18348859. The next prime is 18348877. The reversal of 18348863 is 36884381.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 18348863 - 2² = 18348859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18348863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18348163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6773 + ... + 9086.

It is an arithmetic number, because the mean of its divisors is an integer number (2497950).

Almost surely, 2^18348863 is an apocalyptic number.

18348863 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

18348863 is a deficient number, since it is larger than the sum of its proper divisors (1634737).

18348863 is a wasteful number, since it uses less digits than its factorization.

18348863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15961.

The product of its digits is 110592, while the sum is 41.

The square root of 18348863 is about 4283.5572833803. The cubic root of 18348863 is about 263.7564280458.

The spelling of 18348863 in words is "eighteen million, three hundred forty-eight thousand, eight hundred sixty-three".