18483121 has 4 divisors (see below), whose sum is σ = 19120500. Its totient is φ = 17845744.

The previous prime is 18483109. The next prime is 18483133. The reversal of 18483121 is 12138481.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (18483109) and next prime (18483133).

It can be written as a sum of positive squares in 2 ways, for example, as 6656400 + 11826721 = 2580^2 + 3439^2 .

It is a cyclic number.

It is not a de Polignac number, because 18483121 - 2⁷ = 18482993 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 18483121.

It is not an unprimeable number, because it can be changed into a prime (18483151) 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, 318646 + ... + 318703.

It is an arithmetic number, because the mean of its divisors is an integer number (4780125).

Almost surely, 2^18483121 is an apocalyptic number.

It is an amenable number.

18483121 is a deficient number, since it is larger than the sum of its proper divisors (637379).

18483121 is an equidigital number, since it uses as much as digits as its factorization.

18483121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637378.

The product of its digits is 1536, while the sum is 28.

The square root of 18483121 is about 4299.2000418683. The cubic root of 18483121 is about 264.3981643007.

The spelling of 18483121 in words is "eighteen million, four hundred eighty-three thousand, one hundred twenty-one".