18148647 has 16 divisors (see below), whose sum is σ = 26582400. Its totient is φ = 10922400.

The previous prime is 18148619. The next prime is 18148649. The reversal of 18148647 is 74684181.

It is not a de Polignac number, because 18148647 - 2¹² = 18144551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18148649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3072 + ... + 6762.

It is an arithmetic number, because the mean of its divisors is an integer number (1661400).

Almost surely, 2^18148647 is an apocalyptic number.

18148647 is a deficient number, since it is larger than the sum of its proper divisors (8433753).

18148647 is a wasteful number, since it uses less digits than its factorization.

18148647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3854.

The product of its digits is 43008, while the sum is 39.

The square root of 18148647 is about 4260.1228855515. The cubic root of 18148647 is about 262.7935799279.

It can be divided in two parts, 181 and 48647, that added together give a triangular number (48828 = T₃₁₂).

The spelling of 18148647 in words is "eighteen million, one hundred forty-eight thousand, six hundred forty-seven".