18483149 has 4 divisors (see below), whose sum is σ = 18499836. Its totient is φ = 18466464.

The previous prime is 18483137. The next prime is 18483151. The reversal of 18483149 is 94138481.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94138481 = 43 ⋅2189267.

It can be written as a sum of positive squares in 2 ways, for example, as 4368100 + 14115049 = 2090^2 + 3757^2 .

It is a cyclic number.

It is not a de Polignac number, because 18483149 - 2⁴ = 18483133 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 (18483109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6554 + ... + 8939.

It is an arithmetic number, because the mean of its divisors is an integer number (4624959).

Almost surely, 2^18483149 is an apocalyptic number.

It is an amenable number.

18483149 is a deficient number, since it is larger than the sum of its proper divisors (16687).

18483149 is a wasteful number, since it uses less digits than its factorization.

18483149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16686.

The product of its digits is 27648, while the sum is 38.

The square root of 18483149 is about 4299.2032982868. The cubic root of 18483149 is about 264.3982978125.

The spelling of 18483149 in words is "eighteen million, four hundred eighty-three thousand, one hundred forty-nine".