18150049 has 4 divisors (see below), whose sum is σ = 18270400. Its totient is φ = 18029700.

The previous prime is 18150047. The next prime is 18150079. The reversal of 18150049 is 94005181.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 18150049 - 2¹ = 18150047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18149999 and 18150026.

It is not an unprimeable number, because it can be changed into a prime (18150043) 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, 59949 + ... + 60250.

It is an arithmetic number, because the mean of its divisors is an integer number (4567600).

Almost surely, 2^18150049 is an apocalyptic number.

It is an amenable number.

18150049 is a deficient number, since it is larger than the sum of its proper divisors (120351).

18150049 is a wasteful number, since it uses less digits than its factorization.

18150049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120350.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 18150049 is about 4260.2874316177. The cubic root of 18150049 is about 262.8003467705.

The spelling of 18150049 in words is "eighteen million, one hundred fifty thousand, forty-nine".