18004669 has 4 divisors (see below), whose sum is σ = 18019260. Its totient is φ = 17990080.

The previous prime is 18004661. The next prime is 18004673. The reversal of 18004669 is 96640081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96640081 = 8693 ⋅11117.

It can be written as a sum of positive squares in 2 ways, for example, as 12425625 + 5579044 = 3525^2 + 2362^2 .

It is a cyclic number.

It is not a de Polignac number, because 18004669 - 2³ = 18004661 is a prime.

It is a super-2 number, since 2×18004669² = 648336211599122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18004661) 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, 5254 + ... + 7975.

It is an arithmetic number, because the mean of its divisors is an integer number (4504815).

Almost surely, 2^18004669 is an apocalyptic number.

It is an amenable number.

18004669 is a deficient number, since it is larger than the sum of its proper divisors (14591).

18004669 is a wasteful number, since it uses less digits than its factorization.

18004669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14590.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 18004669 is about 4243.1908983688. The cubic root of 18004669 is about 262.0967971686.

The spelling of 18004669 in words is "eighteen million, four thousand, six hundred sixty-nine".