18148871 has 8 divisors (see below), whose sum is σ = 19695984. Its totient is φ = 16623360.

The previous prime is 18148861. The next prime is 18148873. The reversal of 18148871 is 17884181.

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

It is not a de Polignac number, because 18148871 - 2¹⁰ = 18147847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18148873) 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, 3626 + ... + 7031.

It is an arithmetic number, because the mean of its divisors is an integer number (2461998).

Almost surely, 2^18148871 is an apocalyptic number.

18148871 is a deficient number, since it is larger than the sum of its proper divisors (1547113).

18148871 is a wasteful number, since it uses less digits than its factorization.

18148871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10801.

The product of its digits is 14336, while the sum is 38.

The square root of 18148871 is about 4260.1491757919. The cubic root of 18148871 is about 262.7946611016.

The spelling of 18148871 in words is "eighteen million, one hundred forty-eight thousand, eight hundred seventy-one".