18288941 has 4 divisors (see below), whose sum is σ = 19951584. Its totient is φ = 16626300.

The previous prime is 18288929. The next prime is 18288953. The reversal of 18288941 is 14988281.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (18288929) and next prime (18288953).

It is a cyclic number.

It is not a de Polignac number, because 18288941 - 2¹⁸ = 18026797 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 (18288901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 831305 + ... + 831326.

It is an arithmetic number, because the mean of its divisors is an integer number (4987896).

Almost surely, 2^18288941 is an apocalyptic number.

18288941 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18288941 is a deficient number, since it is larger than the sum of its proper divisors (1662643).

18288941 is a wasteful number, since it uses less digits than its factorization.

18288941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1662642.

The product of its digits is 36864, while the sum is 41.

The square root of 18288941 is about 4276.5571433105. The cubic root of 18288941 is about 263.4689979093.

The spelling of 18288941 in words is "eighteen million, two hundred eighty-eight thousand, nine hundred forty-one".