18148143 has 8 divisors (see below), whose sum is σ = 26058928. Its totient is φ = 11168064.

The previous prime is 18148133. The next prime is 18148153. The reversal of 18148143 is 34184181.

It is an interprime number because it is at equal distance from previous prime (18148133) and next prime (18148153).

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

It is not a de Polignac number, because 18148143 - 2⁵ = 18148111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18148143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18148103) 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, 232630 + ... + 232707.

It is an arithmetic number, because the mean of its divisors is an integer number (3257366).

Almost surely, 2^18148143 is an apocalyptic number.

18148143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

18148143 is a deficient number, since it is larger than the sum of its proper divisors (7910785).

18148143 is a wasteful number, since it uses less digits than its factorization.

18148143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465353.

The product of its digits is 3072, while the sum is 30.

The square root of 18148143 is about 4260.0637319176. The cubic root of 18148143 is about 262.7911472545.

The spelling of 18148143 in words is "eighteen million, one hundred forty-eight thousand, one hundred forty-three".