18274497 has 8 divisors (see below), whose sum is σ = 24388320. Its totient is φ = 12171840.

The previous prime is 18274463. The next prime is 18274513. The reversal of 18274497 is 79447281.

It is a happy number.

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

It is not a de Polignac number, because 18274497 - 2⁶ = 18274433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18275497) 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 7 ways as a sum of consecutive naturals, for example, 2422 + ... + 6512.

It is an arithmetic number, because the mean of its divisors is an integer number (3048540).

Almost surely, 2^18274497 is an apocalyptic number.

It is an amenable number.

18274497 is a deficient number, since it is larger than the sum of its proper divisors (6113823).

18274497 is a wasteful number, since it uses less digits than its factorization.

18274497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5583.

The product of its digits is 112896, while the sum is 42.

The square root of 18274497 is about 4274.8680681396. The cubic root of 18274497 is about 263.3996199452.

The spelling of 18274497 in words is "eighteen million, two hundred seventy-four thousand, four hundred ninety-seven".