18374005 has 8 divisors (see below), whose sum is σ = 23744952. Its totient is φ = 13568448.

The previous prime is 18373981. The next prime is 18374011. The reversal of 18374005 is 50047381.

It can be written as a sum of positive squares in 4 ways, for example, as 1800964 + 16573041 = 1342^2 + 4071^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18374005 - 2⁵ = 18373973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 141274 + ... + 141403.

It is an arithmetic number, because the mean of its divisors is an integer number (2968119).

Almost surely, 2^18374005 is an apocalyptic number.

It is an amenable number.

18374005 is a deficient number, since it is larger than the sum of its proper divisors (5370947).

18374005 is a wasteful number, since it uses less digits than its factorization.

18374005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282695.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 18374005 is about 4286.4909891425. The cubic root of 18374005 is about 263.8768412762.

The spelling of 18374005 in words is "eighteen million, three hundred seventy-four thousand, five".