18348143 has 8 divisors (see below), whose sum is σ = 20482176. Its totient is φ = 16291800.

The previous prime is 18348133. The next prime is 18348157. The reversal of 18348143 is 34184381.

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 18348143 - 2⁸ = 18347887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18348103) 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, 18923 + ... + 19868.

It is an arithmetic number, because the mean of its divisors is an integer number (2560272).

Almost surely, 2^18348143 is an apocalyptic number.

18348143 is a deficient number, since it is larger than the sum of its proper divisors (2134033).

18348143 is a wasteful number, since it uses less digits than its factorization.

18348143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38845.

The product of its digits is 9216, while the sum is 32.

The square root of 18348143 is about 4283.4732402573. The cubic root of 18348143 is about 263.7529781115.

The spelling of 18348143 in words is "eighteen million, three hundred forty-eight thousand, one hundred forty-three".