18274033 has 4 divisors (see below), whose sum is σ = 18292288. Its totient is φ = 18255780.

The previous prime is 18273979. The next prime is 18274037. The reversal of 18274033 is 33047281.

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, and also an emirpimes, since its reverse is a distinct semiprime: 33047281 = 67 ⋅493243.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18274033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18273992 and 18274010.

It is not an unprimeable number, because it can be changed into a prime (18274037) 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, 7533 + ... + 9658.

It is an arithmetic number, because the mean of its divisors is an integer number (4573072).

Almost surely, 2^18274033 is an apocalyptic number.

It is an amenable number.

18274033 is a deficient number, since it is larger than the sum of its proper divisors (18255).

18274033 is a wasteful number, since it uses less digits than its factorization.

18274033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18254.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 18274033 is about 4274.8137971144. The cubic root of 18274033 is about 263.3973906370.

The spelling of 18274033 in words is "eighteen million, two hundred seventy-four thousand, thirty-three".